Exhibit 10
                                                                ----------
                           COMCAST CORPORATION

                          1996 STOCK OPTION PLAN



        1.  PURPOSE OF PLAN
            ---------------

       The purpose of the Plan is to assist the Company in retaining valued
employees, officers and directors by offering them a greater stake in the
Company's success and a closer identity with it, and to aid in attracting
individuals whose services would be helpful to the Company and would 
contribute to its success.

        2.  DEFINITIONS
            -----------

            (a)  "Affiliate" means, with respect to any Person, any other
Person which, directly or indirectly, is in control of, is controlled by, or 
is under common control with, such Person.  For purposes of this definition,
the term "control," including its correlative terms "controlled by" and 
"under common control with," mean, with respect to any Person, the possession,
directly or indirectly, of the power to direct or cause the direction of the
management and policies of such Person, whether through the ownership of 
voting securities, by contract or otherwise.

            (b)  "Board" means the board of directors of the Sponsor.

            (c)  "Cause" means:

                      (i)  for an employee of a Company, a finding 
            by the Committee, after full consideration of the facts
            presented on behalf of both the Company and the employee,
            that the employee has breached his employment contract with a
            Company, has disclosed trade secrets of a Company or has been
            engaged in any sort of disloyalty to a Company, including,
            without limitation, fraud, embezzlement, theft, commission of
            a felony or proven dishonesty in the course of his 
            employment.

                      (ii) for a Non-Employee Director, a finding by 
            the Committee, after full consideration of the facts 
            presented on behalf of both the Company and the Director,
            that such Non-Employee Director has disclosed trade secrets
            of a Company, or has been engaged in any sort of disloyalty
            to a Company, including, without limitation, fraud,
            embezzlement, theft, commission of a felony or proven
            dishonesty in the course of his service as a Non-Employee
            Director.

            (d)  "Change of Control" means any transaction or series of
transactions as a result of which any Person who was a Third Party immediately
before such transaction or series of transactions owns then-outstanding
securities of the Sponsor having more than 50 percent of the voting power for
the election of directors of the Sponsor.




            (e)  "Code" means the Internal Revenue Code of 1986, as amended.

            (f)  "Committee" means the committee described in Paragraph 5.

            (g)  "Common Stock" means the Sponsor's Class A Special Common
Stock, par value, $1.00.

            (h)  "Company" means the Sponsor and each of the Parent Companies
and Subsidiary Companies.

            (i)  "Date of Grant" means the date as of which an Option is
granted.

            (j)  "Disability" means a disability within the meaning of section
22(e)(3) of the Code.

            (k)  "Election Date" means the date on which an individual is
first elected to the Board as a Non-Employee Director, or is elected to the
Board as a Non-Employee Director following a period of one year or more during
which such individual was not a member of the Board.

            (l)  "Fair Market Value."  If Shares are listed on a stock
exchange, Fair Market Value shall be determined based on the last reported sale
price of a Share on the principal exchange on which Shares are listed on the
last trading day prior to the date of determination, or, if Shares are not so
listed, but trades of Shares are reported on the Nasdaq National Market, the
last quoted sale price of a Share on the Nasdaq National Market on the last
trading day prior to the date of determination.

            (m)  "Grant Date" means each February 1st after the date of
adoption of the Plan by the Board.

            (n)  "Immediate Family" means an Optionee's spouse and lineal
descendants, any trust all beneficiaries of which are any of such persons and
any partnership all partners of which are any of such persons.

            (o)  "Incentive Stock Option" means an Option granted under the
Plan, designated by the Committee at the time of such grant as an Incentive
Stock Option within the meaning of section 422 of the Code and containing the
terms specified herein for Incentive Stock Options; provided, however, that to
the extent an Option granted under the Plan and designated by the Committee at
the time of grant as an Incentive Stock Option fails to satisfy the
requirements for an incentive stock option under section 422 of the Code for
any reason, such Option shall be treated as a Non-Qualified Option.

            (p)  "Non-Employee Director" means an individual who is a member
of the Board, and who is not an employee of a Company, including an individual
who is a member of the Board and who previously was an employee of a Company.

                                     2

            (q)  "Non-Qualified Option" means:

                      (i)  an Option granted under the Plan, 
            designated by the Committee at the time of such grant as a
            Non-Qualified Option and containing the terms specified
            herein for Non-Qualified Options; and

                      (ii) an Option granted under the Plan and
            designated by the Committee at the time of grant as an
            Incentive Stock Option, to the extent such Option fails to
            satisfy the requirements for an incentive stock option under
            section 422 of the Code for any reason.

            (r)  "Option" means any stock option granted under the Plan and
described in either Paragraph 3(a) or Paragraph 3(b).

            (s)  "Optionee" means a person to whom an Option has been granted
under the Plan, which Option has not been exercised in full and has not expired
or terminated.

            (t)  "Outside Director" means a member of the Board who is an
"outside director" within the meaning of section 162(m)(4)(C) of the Code and
applicable Treasury Regulations issued thereunder.

            (u)  "Parent Company" means all corporations that, at the time in
question, are parent corporations of the Sponsor within the meaning of section
424(e) of the Code.

            (v)  "Person" means an individual, a corporation, a partnership,
an association, a trust or any other entity or organization.

            (w)  "Plan" means the Comcast Corporation 1996 Stock Option Plan.

            (x)  "Share" or "Shares" means:

                      (i)  for all purposes of the Plan, a share or
            shares of Common Stock or such other securities issued by the
            Sponsor as may be the subject of an adjustment under
            Paragraph 11.

                      (ii) solely for purposes of Paragraphs  7(d) and
            8(d), the term "Share" or "Shares" also means a share or
            shares of the Sponsor's Class A Common Stock, par value,
            $1.00.


                                     3


            (y)  "Sponsor" means Comcast Corporation, a Pennsylvania
corporation, including any successor thereto by merger, consolidation,
acquisition of all or substantially all the assets thereof, or otherwise.

            (z)  "Subsidiary Companies" means all corporations that, at the
time in question, are subsidiary corporations of the Sponsor within the meaning
of section 424(f) of the Code.

            (aa) "Ten Percent Shareholder" means a person who on the Date of
Grant owns, either directly or within the meaning of the attribution rules
contained in section 424(d) of the Code, stock possessing more than 10% of the
total combined voting power of all classes of stock of his employer corporation
or of its parent or subsidiary corporations, as defined respectively in
sections 424(e) and (f) of the Code, provided that the employer corporation is
a Company.

            (bb) "Terminating Event" means any of the following events:

                      (i)  the liquidation of the Sponsor; or

                      (ii) a Change of Control.

            (cc) "Third Party" means any Person other than a Company, together
with such Person's Affiliates.

            (dd) "1933 Act" means the Securities Act of 1933, as amended.

            (ee) "1934 Act" means the Securities Exchange Act of 1934, as
amended.

        3.  RIGHTS TO BE GRANTED
            --------------------

            (a)  TYPES OF OPTIONS AVAILABLE FOR GRANT.  Rights that may be
granted under the Plan are:

                      (i)  Incentive Stock Options, which give an
            Optionee who is an employee of a Company the right for a
            specified time period to purchase a specified number of
            Shares for a price not less than the Fair Market Value on the
            Date of Grant; and

                      (ii) Non-Qualified Options, which give the Optionee
            the right for a specified time period to purchase a specified
            number of Shares for a price not less than the Fair Market
            Value on the Date of Grant.

            (b)  LIMIT ON GRANT OF OPTIONS.  The maximum number of Shares for
which Options may be granted to any single individual in any calendar year,
adjusted as provided in Paragraph 11, shall be 1,000,000 Shares.



                                     4

            (c)  PRESUMPTION OF INCENTIVE STOCK OPTION STATUS.  Each Option
granted under the Plan to an employee of a Company is intended to be an
Incentive Stock Option, except to the extent any such grant would exceed the
limitation of Paragraph 9 and except for any Option specifically designated at
the time of grant as an Option that is not an Incentive Stock Option.

        4.  SHARES SUBJECT TO PLAN
            ----------------------

            Subject to adjustment as provided in Paragraph 11, not more than
20,000,000 Shares in the aggregate may be issued pursuant to the Plan upon
exercise of Options.  Shares delivered pursuant to the exercise of an Option
may, at the Sponsor's option, be either treasury Shares or Shares originally
issued for such purpose.  If an Option covering Shares terminates or expires
without having been exercised in full, other Options may be granted covering
the Shares as to which the Option terminated or expired.

        5.  ADMINISTRATION OF PLAN
            ----------------------

            (a)  COMMITTEE.  The Plan shall be administered by the
Subcommittee on Performance-Based Compensation of the Compensation Committee of
the Board or any other committee or subcommittee designated by the Board,
provided that the committee administering the Plan is composed of two or more
non-employee members of the Board, each of whom is an Outside Director. 
Notwithstanding the foregoing, if Non-Employee Directors are granted Options in
accordance with the provisions of Paragraph 8, the directors to whom such
Options will be granted, the timing of grants of such Options, the Option Price
of such Options and the number of Option Shares included in such Options shall
be as specifically set forth in Paragraph 8.  No member of the Committee shall
participate in the resolution of any issue that exclusively involves an Option
granted to such member.

            (b)  MEETINGS.  The Committee shall hold meetings at such times
and places as it may determine.  Acts approved at a meeting by a majority of
the members of the Committee or acts approved in writing by the unanimous
consent of the members of the Committee shall be the valid acts of the
Committee.

            (c)  EXCULPATION.  No member of the Committee shall be personally
liable for monetary damages for any action taken or any failure to take any
action in connection with the administration of the Plan or the granting of
Options thereunder unless (i) the member of the Committee has breached or
failed to perform the duties of his office, and (ii) the breach or failure to
perform constitutes self-dealing, wilful misconduct or recklessness; provided,
however, that the provisions of this Paragraph 5(c) shall not apply to the
responsibility or liability of a member of the Committee pursuant to any
criminal statute.

            (d)  INDEMNIFICATION.  Service on the Committee shall constitute
service as a member of the Board.  Each member of the Committee shall be
entitled without further act on his part to indemnity from the Sponsor to the
fullest extent provided by applicable law and the Sponsor's By-laws in
connection with or arising out of any actions, suit or proceeding with respect
to the administration of the Plan or the granting of Options thereunder in 
                                     
                                  5

which he may be involved by reasons of his being or having been a member of the
Committee, whether or not he continues to be such member of the Committee at
the time of the action, suit or proceeding.

        6.  ELIGIBILITY
            -----------

            (a)  Eligible individuals to whom Options may be granted shall be
employees, officers or directors of a Company who are selected by the Committee
for the grant of Options.  The terms and conditions of Options granted to
individuals other than Non-Employee Directors shall be determined by the
Committee, subject to Paragraph 7.  The terms and conditions of Options granted
to Non-Employee Directors shall be determined by the Committee, subject to
Paragraph 8.

            (b)  An Incentive Stock Option shall not be granted to a Ten
Percent Shareholder except on such terms concerning the option price and term
as are provided in Paragraph 7(b) and 7(g) with respect to such a person.  An
Option designated as Incentive Stock Option granted to a Ten Percent
Shareholder but which does not comply with the requirements of the preceding
sentence shall be treated as a Non-Qualified Option.  An Option designated as
an Incentive Stock Option shall be treated as a Non-Qualified Option if the
Optionee is not an employee of a Company on the Date of Grant.

        7.  OPTION DOCUMENTS AND TERMS - IN GENERAL
            ---------------------------------------

            All Options granted to Optionees other than Non-Employee Directors
shall be evidenced by option documents.  The terms of each such option document
shall be determined from time to time by the Committee, consistent, however,
with the following:

            (a)  TIME OF GRANT.  All Options shall be granted within 10 years
from the earlier of (i) the date of adoption of the Plan by the Board, or (ii)
approval of the Plan by the shareholders of the Sponsor.

            (b)  OPTION PRICE.  The option price per Share with respect to any
Option shall be determined by the Committee but shall not be less than 100% of
the Fair Market Value of such Share on the Date of Grant; provided, however,
that with respect to any Incentive Stock Options granted to a Ten Percent
Shareholder, the option price per Share shall not be less than 110% of the Fair
Market Value of such Share on the Date of Grant.  

            (c)  RESTRICTIONS ON TRANSFERABILITY.  No Option granted under
this Paragraph 7 shall be transferable otherwise than by will or the laws of
descent and distribution and, during the lifetime of the Optionee, shall be
exercisable only by him or for his benefit by his attorney-in-fact or guardian;
provided that the Committee may, in its discretion, at the time of grant of a
Non-Qualified Option or by amendment of an option document for an Incentive
Stock Option or a Non-Qualified Option, provide that Options granted to or held
by an Optionee may be transferred, in whole or in part, to one or more
transferees and exercised by any such transferee; provided further that (i) any
such transfer is without consideration and (ii) each transferee is a member of
such Optionee's Immediate Family; and provided further that any Incentive Stock
Option granted pursuant to an option document which is amended to permit 
                                
                                6

transfers during the lifetime of the Optionee shall, upon the effectiveness of
such amendment, be treated thereafter as a Non-Qualified Option.  No transfer
of an Option shall be effective unless the Committee is notified of the terms
and conditions of the transfer and the Committee determines that the transfer
complies with the requirements for transfers of Options under the Plan and the
option document.  Any person to whom an Option has been transferred may
exercise any Options only in accordance with the provisions of Paragraph 7(g)
and this Paragraph 7(c).

            (d)  PAYMENT UPON EXERCISE OF OPTIONS.  Full payment for Shares
purchased upon the exercise of an Option shall be made in cash, by certified
check payable to the order of the Sponsor, or, at the election of the Optionee
and as the Committee may, in its sole discretion, approve, by surrendering
Shares with an aggregate Fair Market Value equal to the aggregate option price,
or by delivering such combination of Shares and cash as the Committee may, in
its sole discretion, approve; provided, however, that Shares may be surrendered
in satisfaction of the option price only if the Optionee has held such Shares
for more than six months (or such shorter period of time as shall not, in the
Committee's sole discretion, have an adverse effect on the Sponsor's financial
statements) as of the date the Option is exercised; provided further, however,
that the option price may not be paid in Shares if the Committee determines
that such method of payment would result in liability under section 16(b) of
the 1934 Act to an Optionee.  Except as otherwise provided by the Committee, if
payment is made in whole or in part in Shares, the Optionee shall deliver to
the Sponsor certificates registered in the name of such Optionee representing
Shares legally and beneficially owned by such Optionee, free of all liens,
claims and encumbrances of every kind and having a Fair Market Value on the
date of delivery that is not greater than the option price accompanied by stock
powers duly endorsed in blank by the record holder of the Shares represented by
such certificates.  If the Committee, in its sole discretion, should refuse to
accept Shares in payment of the option price, any certificates representing
Shares which were delivered to the Sponsor shall be returned to the Optionee
with notice of the refusal of the Committee to accept such Shares in payment of
the option price.  The Committee may impose such limitations and prohibitions
on the use of Shares to exercise an Option as it deems appropriate.

            (e)  ISSUANCE OF CERTIFICATE UPON EXERCISE OF OPTIONS; PAYMENT OF
CASH.  Only whole Shares shall be issuable upon exercise of Options.  Any right
to a fractional Share shall be satisfied in cash.  Upon satisfaction of the
conditions of Paragraph 10, a certificate for the number of whole Shares and a
check for the Fair Market Value on the date of exercise of any fractional Share
to which the Optionee is entitled shall be delivered to such Optionee by the
Sponsor.

            (f)  TERMINATION OF EMPLOYMENT.  For purposes of the Plan, a
transfer of an employee between two employers, each of which is a Company,
shall not be deemed a termination of employment.  For purposes of Paragraph
7(g), an Optionee's termination of employment shall be deemed to occur on the
date of an Optionee ceases to serve as an active, full-time employee of a
Company, as determined by the Committee in its sole discretion, or, if the
Optionee is a party to an employment agreement with a Company, on the effective
date of the Optionee's termination of employment as determined under such
agreement.

            (g)  PERIODS OF EXERCISE OF OPTIONS.  An Option shall be
exercisable in whole or in part at such time or times as may be determined by
the Committee and stated in the option document, provided, however,          

                                7

that if the grant of an Option would be subject to section 16(b) of the 1934
Act, unless the requirements for exemption therefrom in Rule 16b-
3(c)(1), under such Act, or any successor provision, are met, the option
document for such Option shall provide that such Option is not exercisable
until not less than six months have elapsed from the Date of Grant.  Except as
otherwise provided by the Committee in its discretion, no Option shall first
become exercisable following an Optionee's termination of employment for any
reason; provided further, that:

                      (i)       In the event that an Optionee terminates 
                 employment with the Company for any reason other than 
                 death or Cause, any Option held by such Optionee and 
                 which is then exercisable shall be exercisable for a
                 period of 90 days following the date the Optionee
                 terminates employment with the Company (unless a longer
                 period is established by the Committee); provided,
                 however, that if such termination of employment with the
                 Company is due to the Disability of the Optionee, he
                 shall have the right to exercise those of his Options
                 which are then exercisable for a period of one year
                 following such termination of employment (unless a
                 longer period is established by the Committee);
                 provided, however, that in no event shall an Incentive
                 Stock Option be exercisable after five years from the
                 Date of Grant in the case of a grant to a Ten Percent
                 Shareholder, nor shall any other Option be exercisable
                 after ten years from the Date of Grant. 

                      (ii)      In the event that an Optionee terminates
                 employment with the Company by reason of his death, any
                 Option held at death by such Optionee which is then
                 exercisable shall be exercisable for a period of one
                 year from the date of death (unless a longer period is
                 established by the Committee) by the person to whom the
                 rights of the Optionee shall have passed by will or by
                 the laws of descent and distribution; provided, however,
                 that in no event shall an Incentive Stock Option be
                 exercisable after five years from the Date of Grant in
                 the case of a grant to a Ten Percent Shareholder, nor
                 shall any other Option be exercisable after ten years
                 from the Date of Grant.

                      (iii)     In the event that an Optionee's
                 employment with the Company is terminated for Cause,
                 each unexercised Option held by such Optionee shall
                 terminate and cease to be exercisable; provided further,
                 that in such event, in addition to immediate termination
                 of the Option, the Optionee, upon a determination by the
                 Committee shall automatically forfeit all Shares
                 otherwise subject to delivery upon exercise of an Option
                 but for which the Sponsor has not yet delivered the
                 Share certificates, upon refund by the Sponsor of the
                 option price.

            (h)  DATE OF EXERCISE.  The date of exercise of an Option shall be
the date on which written notice of exercise, addressed to the Sponsor at its
main office to the attention of its Secretary, is hand delivered, telecopied or
mailed first class postage prepaid; provided, however, that the Sponsor shall
                                   8

not be obligated to deliver any certificates for Shares pursuant to the 
exercise of an Option until the Optionee shall have made payment in full of the
option price for such Shares.  Each such exercise shall be irrevocable when
given.  Each notice of exercise must (i) specify the Incentive Stock Option,
Non-Qualified Option or combination thereof being exercised; and (ii) include a
statement of preference (which shall binding on and irrevocable by the Optionee
but shall not be binding on the Committee) as to the manner in which payment to
the Sponsor shall be made (Shares or cash or a combination of Shares and cash). 
Each notice of exercise shall also comply with the requirements of Paragraph
15.

        8.  OPTION DOCUMENTS AND TERMS  - NON-EMPLOYEE DIRECTORS
            ----------------------------------------------------

            Options granted pursuant to the Plan to Non-Employee Directors
shall be granted, without any further action by the Committee, in accordance
with the terms and conditions set forth in this Paragraph 8.  Options granted
pursuant to Paragraph 8(a) shall be evidenced by option documents.  The terms
of each such option document shall be consistent with Paragraphs 8(b) through
8(g), as follows:

            (a)  GRANT OF OPTIONS TO NON-EMPLOYEE DIRECTORS.  Each Non-
Employee Director shall be granted, commencing on the Grant Date next following
the adoption of this Plan by the Board and on each successive Grant Date
thereafter, a Non-Qualified Option to purchase 5,400 Shares.  Notwithstanding
the preceding sentence, each newly elected Non-Employee Director:

                      (i)  shall be granted a Non-Qualified Option to
            purchase 9,000 Shares on the Election Date; and 

                      (ii) shall not be entitled to the grant of an
            Option hereunder on the Grant Date immediately following the
            Non-Employee Director's Election Date if such Election Date
            is within ninety (90) days of the Grant Date.

            (b)  OPTION PRICE.  The option price per Share with respect to any
Option granted under this Paragraph 8 shall be 100% of the Fair Market Value of
such Share on the Grant Date.

            (c)  RESTRICTIONS ON TRANSFERABILITY.  No Option granted under
this Paragraph 8 shall be transferable otherwise than by will or the laws of
descent and distribution and, during the lifetime of the Optionee, shall be
exercisable only by him or for his benefit by his attorney-in-fact or guardian;
provided that the Committee may, in its discretion, at the time of grant of an
Option or by amendment of an option document for an Option, provide that
Options may be transferred, in whole or in part, to one or more transferees and
exercised by any such transferee; provided further that (i) any such transfer
is without consideration, and (ii) each transferee is a member of such
Optionee's Immediate Family.  No transfer of an Option shall be effective
unless the Committee is notified of the terms and conditions of the transfer
and the Committee determines that the transfer complies with the requirements
for transfers of Options under the Plan and the option document.  Any person to
whom an Option has been transferred may exercise any Options only in accordance
with the provisions of Paragraph 8(f) and this Paragraph 8(c).

            (d)  PAYMENT UPON EXERCISE OF OPTIONS.  Full payment for Shares
purchased upon the exercise of an Option shall be made in cash, by
                                     9

certified check payable to the order of the Sponsor, or, at the election of the
Optionee and as the Committee may, in its sole discretion, approve, 
by surrendering Shares with an aggregate Fair Market Value equal to the
aggregate option price, or by delivering such combination of Shares and cash as
the Committee may, in its sole discretion, approve; provided, however, that
Shares may be surrendered in satisfaction of the option price only if the
Optionee has held such Shares for more than six months (or such shorter period
of time as shall not, in the Committee's sole discretion, have an adverse
effect on the Sponsor's financial statements) as of the date the Option is
exercised; provided further, however, that the option price may not be paid in
Shares if the Committee determines that such method of payment would result in
liability under section 16(b) of the 1934 Act to an Optionee.  Except as
otherwise provided by the Committee, if payment is made in whole or in part in
Shares, the Optionee shall deliver to the Sponsor certificates registered in
the name of such Optionee representing Shares legally and beneficially owned by
such Optionee, free of all liens, claims and encumbrances of every kind and
having a Fair Market Value on the date of delivery that is not greater than the
option price accompanied by stock powers duly endorsed in blank by the record
holder of the Shares represented by such certificates.  If the Committee, in
its sole discretion, should refuse to accept Shares in payment of the option
price, any certificates representing Shares which were delivered to the Sponsor
shall be returned to the Optionee with notice of the refusal of the Committee
to accept such Shares in payment of the option price.  The Committee may impose
such limitations and prohibitions on the use of Shares to exercise an Option as
it deems appropriate.


            (e)  ISSUANCE OF CERTIFICATE UPON EXERCISE OF OPTIONS; PAYMENT OF
CASH.  Only whole Shares shall be issuable upon exercise of Options granted
under this Paragraph 8.  Any right to a fractional Share shall be satisfied in
cash.  Upon satisfaction of the conditions of Paragraph 10, a certificate for
the number of whole Shares and a check for the Fair Market Value on the date of
exercise of any fractional Share to which the Optionee is entitled shall be
delivered to such Optionee by the Sponsor.

            (f)  PERIODS OF EXERCISE OF OPTIONS.  An Option granted under this
Paragraph 8 shall not be exercisable for six months after the Date of Grant,
and shall then be exercisable in its entirety.  No Option shall first become
exercisable following an Optionee's termination of service as a Non-Employee
Director for any reason; provided further, that:

                      (i)  In the event that an Optionee terminates
            service as a Non-Employee Director for any reason other than
            death or Cause, any Option held by such Optionee and which is
            then exercisable shall be exercisable for a period of 90 days
            following the date the Optionee terminates service as a Non-
            Employee Director; provided, however, that if such
            termination of employment with the Company is due to the
            Disability of the Optionee, he shall have the right to
            exercise those of his Options which are then exercisable for
            a period of one year following the date the Optionee
            terminates service as a Non-Employee Director; provided,
            however, that in no event shall an Option be exercisable
            after five years from the Grant Date.


                                     10

                      (ii) In the event that an Optionee terminates
            service as a Non-Employee Director by reason of his death,
            any Option held at death by such Optionee which is then
            exercisable shall be exercisable for a period of one year
            from the date of death by the person to whom the rights of
            the Optionee shall have passed by will or by the laws of
            descent and distribution; provided, however, that in no event
            shall an Option be exercisable after five years from the
            Grant Date.

                      (iii)     In the event that an Optionee's service 
            as a Non-Employee Director is terminated for Cause, each
            unexercised Option shall terminate and cease to be
            exercisable; provided further, that in such event, in
            addition to immediate termination of the Option, the Optionee
            shall automatically forfeit all Shares otherwise subject to
            delivery upon exercise of an Option but for which the Sponsor
            has not yet delivered the Share certificates, upon refund by
            the Sponsor of the option price.

            (g)  DATE OF EXERCISE.  The date of exercise of an Option granted
under this Paragraph 8 shall be the date on which written notice of exercise,
addressed to the Sponsor at its main office to the attention of its Secretary,
is hand delivered, telecopied or mailed first class postage prepaid; provided,
however, that the Sponsor shall not be obligated to deliver any certificates
for Shares pursuant to the exercise of an Option until the Optionee shall have
made payment in full of the option price for such Shares.  Each such exercise
shall be irrevocable when given.  Each notice of exercise must (i) specify the
Option being exercised; and (ii) include a statement as to the manner in which
payment to the Sponsor shall be made (Shares or cash or a combination of Shares
and cash).  Each notice of exercise shall also comply with the requirements of
Paragraph 15.

        9.  LIMITATION ON EXERCISE OF INCENTIVE STOCK OPTIONS.
            -------------------------------------------------

             The aggregate Fair Market Value (determined as of the time
Options are granted) of the Shares with respect to which Incentive Stock
Options may first become exercisable by an Optionee in any one calendar year
under the Plan and any other plan of the Company shall not exceed $100,000. 
The limitations imposed by this Paragraph 9 shall apply only to Incentive Stock
Options granted under the Plan, and not to any other options or stock
appreciation rights.  In the event an individual receives an Option intended to
be an Incentive Stock Option which is subsequently determined to have exceeded
the limitation set forth above, or if an individual receives Options that first
become exercisable in a calendar year (whether pursuant to the terms of an
option document, acceleration of exercisability or other change in the terms
and conditions of exercise or any other reason) that have an aggregate Fair
Market Value (determined as of the time the Options are granted) that exceeds
the limitations set forth above, the Options in excess of the limitation shall
be treated as Non-Qualified Options.

       10.  RIGHTS AS SHAREHOLDERS
            ----------------------  

            An Optionee shall not have any right as a shareholder with respect
to any Shares subject to his Options until the Option shall have been
                                      11

exercised in accordance with the terms of the Plan and the option document and
the Optionee shall have paid the full purchase price for the number of Shares
in respect of which the Option was exercised and the
Optionee shall have made arrangements acceptable to the Sponsor for the payment
of applicable taxes consistent with Paragraph 16.

       11.  CHANGES IN CAPITALIZATION
            -------------------------

            (a)  Except as provided in Paragraph 11(b), in the event that
Shares are changed into or exchanged for a different number or kind of shares
of stock or other securities of the Sponsor, whether through merger,
consolidation, reorganization, recapitalization, stock dividend, stock split-up
or other substitution of securities of the Sponsor, the Board shall make
appropriate equitable anti-dilution adjustments to the number and class of
shares of stock available for issuance under the Plan, and subject to
outstanding Options and to the option prices.  Any reference to the option
price in the Plan and in option documents shall be a reference to the option
price as so adjusted.  Any reference to the term "Shares" in the Plan and in
option documents shall be a reference to the appropriate number and class of
shares of stock available for issuance under the Plan, as adjusted pursuant to
this Paragraph 11.  The Board's adjustment shall be effective and binding for
all purposes of this Plan.

            (b)  Paragraph 11(a) shall not apply to the number of Shares that
become subject to the grant of Options under Paragraph 8(a).  Paragraph 11(a)
shall apply for the purpose of making appropriate equitable anti-dilution
adjustments to Options granted pursuant to Paragraph 8(a) before the effective
date of the relevant event giving rise to the adjustment under Paragraph 11(a).

       12.  TERMINATING EVENTS
            ------------------

            (a)  The Sponsor shall give Optionees at least thirty (30) days'
notice (or, if not practicable, such shorter notice as may be reasonably
practicable) prior to the anticipated date of the consummation of a Terminating
Event.  Upon receipt of such notice, and for a period of ten (10) days
thereafter (or such shorter period as the Board shall reasonably determine and
so notify the Optionees), each Optionee shall be permitted to exercise the
Option to the extent the Option is  then exercisable; provided that, the
Sponsor may, by similar notice, require the Optionee to exercise the Option, to
the extent the Option is then exercisable, or to forfeit the Option (or portion
thereof, as applicable).  The Committee may, in its discretion, provide that
upon the Optionee's receipt of the notice of a Terminating Event under this
Paragraph 12(a), the entire number of Shares covered by Options shall become
immediately exercisable.  Upon the close of the period described in this 
Paragraph 12(a) during which an Option may be exercised in connection with a
Terminating Event, such Option (including such portion thereof that is not
exercisable) shall terminate to the extent that such Option has not theretofore
been exercised. 

            (b)  Notwithstanding Paragraph 12(a), in the event the Terminating
Event is not consummated, the Option shall be deemed not to have been exercised
and shall be exercisable thereafter to the extent it would have been
exercisable if no such notice had been given.


                                     12

       13.  INTERPRETATION
            --------------

            The Committee shall have the power to interpret the Plan and to
make and amend rules for putting it into effect and administering it.  It is
intended that the Incentive Stock Options granted under the Plan shall
constitute incentive stock options within the meaning of section 422 of the
Code, and that Shares transferred pursuant to the exercise of Non-Qualified
Options shall constitute property subject to federal income tax pursuant to the
provisions of section 83 of the Code.  The provisions of the Plan shall be
interpreted and applied insofar as possible to carry out such intent.

       14.  AMENDMENTS
            ----------

            The Committee may amend the Plan from time to time in such manner
as it may deem advisable.  Nevertheless, the Committee may not, without
obtaining approval within twelve months before or after such action by such
vote of shareholders as may be required by Pennsylvania law for any action
requiring shareholder approval, or by a majority of votes cast at a duly held
shareholders' meeting at which a majority of all voting stock is present and
voting on such amendment, either in person or in proxy (but not, in any event,
less than the vote required pursuant to Rule 16b-3(b) under the 1934 Act)
change the class of individuals eligible to receive an Incentive Stock Option,
extend the expiration date of the Plan, decrease the minimum option price of an
Incentive Stock Option granted under the Plan or increase the maximum number of
shares as to which Options may be granted, except as provided in Paragraph 11
hereof.  In addition, the provisions of Paragraph 8 that determine (i) which
directors shall be granted Options; (ii) the number of Shares subject to
Options; (iii) the option price of Shares subject to Options; and (iv) the
timing of grants of Options shall not be amended more than once every six
months, other than to comport with changes in the Code or the Employee
Retirement Income Security Act of 1974, as amended, if applicable.  No
outstanding Option shall be affected by any such amendment without the written
consent of the Optionee or other person then entitled to exercise such Option.

       15.  SECURITIES LAW
            --------------

            (a)  IN GENERAL.  The Committee shall have the power to make each
grant under the Plan subject to such conditions as it deems necessary or
appropriate to comply with the then-existing requirements of the 1933 Act or
the 1934 Act, including Rule 16b-3 (or any similar rule) of the Securities and
Exchange Commission.

            (b)  ACKNOWLEDGMENT OF SECURITIES LAW RESTRICTIONS ON EXERCISE. 
To the extent required by the Committee, unless the Shares subject to the
Option are covered by a then current registration statement or a Notification
under Regulation A under the 1933 Act, each notice of exercise of an Option
shall contain the Optionee's acknowledgment in form and substance satisfactory
to the Committee that:

                      (i)  the Shares subject to the Option are 
            being purchased for investment and not for distribution or
            resale (other than a distribution or resale which, in the

                                     13

            opinion of counsel satisfactory to the Sponsor, may be made
            without violating the registration provisions of the Act);
       
                      (ii) the Optionee has been advised and 
            understands that (A) the Shares subject to the Option have
            not been registered under the 1933 Act and are "restricted
            securities" within the meaning of Rule 144 under the 1933 Act
            and are subject to restrictions on transfer and (B) the
            Sponsor is under no obligation to register the Shares subject
            to the Option under the 1933 Act or to take any action which
            would make available to the Optionee any exemption from such
            registration;

                     (iii) the certificate evidencing the Shares may
            bear a restrictive legend; and 

                      (iv) the Shares subject to the Option may not be 
            transferred without compliance with all applicable federal
            and state securities laws.  

                 (c)  DELAY OF EXERCISE PENDING REGISTRATION OF SECURITIES. 
Notwithstanding any provision in the Plan or an option document to the
contrary, if the Committee determines, in its sole discretion, that issuance of
Shares pursuant to the exercise of an Option should be delayed pending
registration or qualification under federal or state securities laws or the
receipt of a legal opinion that an appropriate exemption from the application
of federal or state securities laws is available, the Committee may defer
exercise of any Option until such Shares are appropriately registered or
qualified or an appropriate legal opinion has been received, as applicable.

       16.  WITHHOLDING OF TAXES ON EXERCISE OF OPTION
            ------------------------------------------   

            (a)  Whenever the Sponsor proposes or is required to deliver or
transfer Shares in connection with the exercise of an Option, the Sponsor shall
have the right to (i) require the recipient to remit to the Sponsor an amount
sufficient to satisfy any federal, state and local withholding tax requirements
prior to the delivery or transfer of any certificate or certificates for such
Shares or (ii) take any action whatever that it deems necessary to protect its
interests with respect to tax liabilities.  The Sponsor's obligation to make
any delivery or transfer of Shares on the exercise of an Option shall be
conditioned on the recipient's compliance, to the Sponsor's satisfaction, with
any withholding requirement.  In addition, if the Committee grants Options or
amends option documents to permit Options to be transferred during the life of
the Optionee, the Committee may include in such option documents such
provisions as it determines are necessary or appropriate to permit the Company
to deduct compensation expenses recognized upon exercise of such Options for
federal or state income tax purposes.

            (b)  Except as otherwise provided in this Paragraph 16(b), any tax
liabilities incurred in connection with the exercise of an Option under the
Plan other than an Incentive Stock Option shall be satisfied by the Sponsor's
withholding a portion of the Shares underlying the Option exercised having a
Fair Market Value approximately equal to the minimum amount of taxes required
to be withheld by the Sponsor under applicable law, unless otherwise determined
by the Committee with respect to any Optionee.  Notwithstanding the foregoing,
the Committee may permit an Optionee to elect one or both of the 
                                     14

following:  (i) to have taxes withheld in excess of the minimum amount required
to be withheld by the Sponsor under applicable law; provided that the Optionee
certifies in writing to the Sponsor that the Optionee has held for at least six
months a number of shares of the same class as that of the Option Shares that
is at least equal to that number of Option Shares to be withheld by the Company
for the then-current exercise and that number of Option Shares which were
withheld by the Sponsor in connection with all other exercises of Options
during the six-month period prior to such election, in each case on account of
withheld taxes in excess of such minimum amount, and (ii) to pay to the Sponsor
in cash all or a portion of the taxes to be withheld upon the exercise of an
Option.  In all cases, the Shares so withheld by the Sponsor shall have a Fair
Market Value that does not exceed the amount of taxes to be withheld minus the
cash payment, if any, made by the Optionee.  Any election pursuant to this
Paragraph 16(b) must be in writing made prior to the date specified by the
Committee, and in any event prior to the date the amount of tax to be withheld
or paid is determined.  In addition, with respect to persons subject to
reporting requirements under section 16(a) of the 1934 Act, such election must
be made at least six months prior to the date the amount of tax to be withheld
or paid is determined (which election will remain in effect with regard to the
exercise of an Option and all future exercises of Options unless revoked upon
six months prior notice).  An election pursuant to this Paragraph 16(b) may be
made only by an Optionee or, in the event of the Optionee's death, by the
Optionee's legal representative.  No Shares withheld pursuant to this Paragraph
16(b) shall be available for subsequent grants under the Plan.  The Committee
may add such other requirements and limitations regarding elections pursuant to
this Paragraph 16(b) as it deems appropriate.

       17.  EFFECTIVE DATE AND TERM OF PLAN
            -------------------------------

            The Plan shall become effective on the date on which the Plan is
adopted by the Board, and shall expire no later than the tenth anniversary of
the Board adoption, unless sooner terminated by the Board.  Any Option granted
before the approval of the Plan by the Sponsor's shareholders shall be
expressly conditioned upon, and shall not be exercisable until, such approval. 
If such shareholder approval is not received within 12 months before or after
the date of the adoption of the Plan by the Board, all Options granted under
the Plan shall expire.

       18.  GENERAL
            -------

            Each Option shall be evidenced by a written instrument containing
such terms and conditions not inconsistent with the Plan as the Committee may
determine.  The issuance of Shares on the exercise of an Option shall be
subject to all of the applicable requirements of the corporation law of the
Sponsor's state of incorporation and other applicable laws, including federal
or state securities laws, and all 








                                15

Shares issued under the Plan shall be subject to the terms and restrictions
contained in the Articles of Incorporation and By-Laws of the Sponsor, as
amended from time to time.

             Executed this 13th day of March, 1996.
                           


[CORPORATE SEAL]                COMCAST CORPORATION



Attest: /s/ Arthur R. Block     By: /s/ Stanley Wang
        -------------------         ----------------









































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