RADIUS INC.

                    1990 EMPLOYEE STOCK PURCHASE PLAN

            As Amended by the Board of Directors Through June 21 1995
                 As Approved by Shareholders on August 23, 1995


            1.  ESTABLISHMENT OF PLAN.  Radius, Inc. (the "Company") proposes to
          grant options for purchase of the Company's Common Stock to eligible
          employees of the Company and Subsidiaries (as hereinafter defined)
          pursuant to this Employee Stock Purchase Plan (the "Plan").  For
          purposes of this Plan, "parent corporation" and "Subsidiary" (when
          used in the plural, "Subsidiaries") shall have the same meanings as
          "parent corporation" and "subsidiary corporation" in Sections 425(e)
          and 425(f), respectively, of the Internal Revenue Code of 1986, as
          amended (the "Code").  The Company intends that the Plan shall qualify
          as an "employee stock purchase plan"  under Section 423 of the Code
          (including any amendments or replacements of such section), and the
          Plan shall be so construed.  Any term not expressly defined in the
          Plan but defined for purposes of Section 423 of the Code shall have
          the same definition herein.  Subject to adjustment as provided in
          Section 14 of the Plan, the aggregate number of shares of Common Stock
          which may be purchased under this Plan shall not exceed 650,000 shares
          of Common Stock of the Company, which may be treasury shares
          reacquired by the Company or authorized and unissued shares, or a
          combination of both.

            2.  PURPOSES.  The purpose of the Plan is to provide employees of
          the Company and Subsidiaries designated by the Board of Directors as
          eligible to participate in the Plan with a convenient means to acquire
          an equity interest in the Company through payroll deductions, to
          enhance such employees' sense of participation in the affairs of the
          Company and Subsidiaries, and to provide an incentive for continued
          employment.

            3.  ADMINISTRATION.  The Plan is administered by the Board of
          Directors of the Company or by a committee designated by the Board of
          Directors of the Company (in which event all references herein to the
          Board of Directors shall be to the committee).  Subject to the
          provisions of the Plan and the limitations of Section 423 of the Code
          or any successor provision in the Code, all questions of
          interpretation or application of the Plan shall be determined by the
          Board and its decisions shall be final and binding upon all
          participants.  Members of the Board shall receive no compensation for
          their services in connection with the administration of the Plan,
          other than standard fees as established from time to time by the Board
          of Directors of the Company for services rendered by Board members
          serving on Board committees.  All expenses incurred in connection with
          the administration of the Plan shall be paid by the Company.

            4.  ELIGIBILITY.  Any employee of the Company or the Subsidiaries is
          eligible to participate in an Offering Period (as hereinafter defined)
          under the Plan except the following:

                    (a)  employees who are not employed by the Company or
                Subsidiaries on the day before the beginning of such Offering
                Period;

                    (b)  employees who are customarily employed for less than 20
                hours per week;

                    (c)  employees who are customarily employed for less than 5
                months in a calendar year; and




                    (d)  employees who, together with any other person whose
                stock would be attributed to such employee pursuant to Section
                425(d) of the Code, own stock or hold options to purchase stock
                or who, as a result of being granted an option under the Plan
                with respect to such Offering Period, would own stock or hold
                options to purchase stock possessing 5 percent or more of the
                total combined voting power or value of all classes of stock of
                the Company or any of its Subsidiaries.

            5.  OFFERING DATES.  The Offering Periods of the Plan (the "Offering
          Period") shall be of six (6) months duration commencing April 1 and
          October 1 of each year and ending on September 30 and March 31,
          respectively, during which payroll deductions of the participant are
          accumulated under this Plan.  The first Offering Period shall commence
          on April 1, 1991.  The first day of each Offering Period is referred
          to as the "Offering Date."  The last day of each Offering Period is
          hereinafter referred to as the "Purchase Date".  The Board of
          Directors of the Company shall have the power to change the duration
          of Offering Periods with respect to future offerings without
          shareholder approval if such change is announced at least fifteen (15)
          days prior to the scheduled beginning of the first Offering Period to
          be affected.

            6.  PARTICIPATION IN THE PLAN.  Eligible employees may become
          participants in an Offering Period under the Plan on the first
          Offering Date after satisfying the eligibility requirements by
          delivering to the Company's or Subsidiary's (whichever employs such
          employee) payroll department not later than March 22, 1991 a
          subscription agreement authorizing payroll deductions for the Offering
          Period beginning April 1, 1991. For subsequent Offering Periods the
          subscription agreement is due (i) for current employees, not later
          than the 15th day of the month before such Offering Date, or (ii) for
          new employees who commenced employment with the Company within thirty
          (30) days of the next Offering Date, not later than the day before the
          beginning of the new Offering period,  unless a later time for filing
          the subscription agreement is set by the Board for all eligible
          employees with respect to a given Offering Period,  An eligible
          employee who does not deliver a subscription agreement to the payroll
          department by such date after becoming eligible to participate in such
          Offering Period under the Plan shall not participate in that Offering
          Period or any subsequent Offering Period unless such employee enrolls
          in the Plan by filing the subscription agreement with the payroll
          department not later than the 15th day of the month preceding a
          subsequent Offering Date.  Once an employee becomes a participant in
          an Offering Period, such employee will automatically participate in
          the Offering Period commencing immediately following the last day of
          the prior Offering Period unless the employee withdraws from the Plan
          or terminates further participation in the Offering Period as set
          forth in Section 11 below.  Such participant is not required to file
          any additional subscription agreements in order to continue
          participation in the Plan.  Any participant whose option expires and
          who has not withdrawn from the Plan pursuant to Section 11 below will
          automatically be re-enrolled in the Plan and granted a new option on
          the Offering Date of the next Offering Period.


            7.  GRANT OF OPTION ON ENROLLMENT.  An eligible employee who enrolls
          in the Plan with respect to an Offering Period pursuant to Section 6
          hereof, will receive a grant of an option (as of the Offering Date) to
          purchase on the Purchase Date up to that number of shares of Common
          Stock of the Company determined by dividing the amount accumulated in
          such employee's payroll deduction account during such Offering Period
          by the lower of (i) eighty-five percent (85%) of the fair market value
          of a share of the Company's Common Stock on the Offering Date (the
          "Entry Price") or (ii) eighty-five percent (85%) of the fair market
          value of a share of the Company's Common Stock on the Purchase Date,
          provided, however, that the number of shares of the Company's Common
          Stock subject to any option granted pursuant to this Plan shall not
          exceed the lesser of (a) the maximum number of shares set by the Board
          pursuant to Section 10(c) below with respect to the applicable
          Offering Period, or (b) 200% of the number




          of shares determined by using 85% of the fair market value of a
          share of the Company's Common Stock on the Offering Date as the
          denominator.  Fair market value of a share of the Company's Common
          Stock shall be determined as provided in Section 8 hereof.

            8.  PURCHASE PRICE.  The purchase price per share at which a share
          of Common Stock will be purchased in any Offering Period shall be 85
          percent of the lesser of:

                    (a)  the fair market value at the close of trading on the
                         day prior to the Offering Date; or

                    (b)  the fair market value at the close of trading on the
                         Purchase Date.

            For purposes of the Plan, the term "fair market value" on a given
          date shall mean the closing price in U.S. dollars of a share of the
          Company's Common Stock on that date as reported on the NASDAQ National
          Market System.

            9.  PAYMENT OF PURCHASE PRICE; CHANGES IN PAYROLL DEDUCTIONS;
                ISSUANCE OF SHARES.

                    (a)  The purchase price of the shares is accumulated by
                regular payroll deductions made during each Offering Period.
                The deductions are made as a percentage of the employee's
                compensation in one percent increments not less than 2 percent
                nor greater than 10 percent.  Compensation shall be limited to
                base salary or wages, bonuses, overtime and commissions, if any,
                paid; provided, however, that for purposes of determining a
                participant's compensation, any election by such participant to
                reduce his or her regular cash remuneration under Sections 125
                or 401(k) of the Code shall be treated as if the participant did
                not make such election.  Payroll deductions shall commence on
                the first payday following the Offering Date and shall continue
                to the end of the Offering Period unless sooner altered or
                terminated as provided in the Plan.

                    (b)  A participant may decrease (but not increase) the rate
                of payroll deductions during an Offering Period by filing with
                the payroll department a new authorization for payroll
                deductions, in which case the new rate shall become effective
                for the next payroll period commencing more than 15 days after
                the payroll department's receipt of the authorization and shall
                continue for the remainder of the Offering Period unless changed
                as described below.  Such change in the rate of payroll
                deductions may be made at any time during an Offering Period,
                but not more than one change may be made effective during any
                Offering Period.  A participant may increase or decrease the
                rate of payroll deductions for any subsequent Offering Period by
                filing with the payroll department a new authorization for
                payroll deductions not later than the 15th day of the month
                before the beginning of such Offering Period.

                    (c)  All payroll deductions made for a participant are
                credited to his or her account under the Plan and are deposited
                with the general funds of the Company; no interest accrues on
                the payroll deductions.  All payroll deductions received or held
                by the Company may be used by the Company for any corporate
                purpose, and the Company shall not be obligated to segregate
                such payroll deductions.

                    (d)  On each Purchase Date, so long as the Plan remains in
                effect and provided that the participant has not submitted a
                signed and completed withdrawal form before that date which
                notifies the Company that the participant wishes to



                withdraw from that Offering Period under the Plan and have all
                payroll deductions accumulated in the account maintained on
                behalf of the participant as of that date returned to the
                participant, the Company shall apply the funds then in the
                participant's account to the purchase of whole shares of Common
                Stock reserved under the option granted to such participant with
                respect to the Offering Period to the extent that such option is
                exercisable on the Purchase Date. The purchase price per share
                shall be as specified in Section 8 of the Plan. Any cash
                remaining in a participant's account after such purchase of
                shares by reason of any limitation on the number of shares that
                may be purchased under the Plan as set forth in Section 10
                hereof, shall be refunded to such participant in cash; provided,
                however, that any amount remaining in such participant's account
                on a Purchase Date which is less than the amount necessary to
                purchase a full share of Common Stock of the Company shall be
                carried forward, without interest, into the next Offering
                Period.  In the event that the Plan has been oversubscribed,
                all funds not used to purchase shares on the Purchase Date
                shall be returned to the participant.  No Common Stock shall
                be purchased on a Purchase Date on behalf of any employee
                whose participation in the Plan has terminated prior to such
                Purchase Date.

                    (e)  As promptly as practicable after the Purchase Date, the
                Company shall arrange the delivery to each participant, as
                appropriate, of a statement of  shares purchased upon exercise
                of his option.

                    (f)  During a participant's lifetime, such participant's
                option to purchase shares hereunder is exercisable only by him
                or her.  The participant will have no interest or voting right
                in shares covered by his or her option until such option has
                been exercised.  Shares purchased on behalf of  a participant
                under the Plan will be included in the Beneficial Owners list
                associated with the total shares  registered in the name of the
                Employee Stock Purchase Plan individual accounts.

            10. LIMITATIONS ON SHARES TO BE PURCHASED.

                    (a)  No employee shall be entitled to purchase stock under
                the Plan at a rate which, when aggregated with his or her rights
                to purchase stock under all other employee stock purchase plans
                of the Company or any Subsidiary, exceeds $25,000 in fair market
                value, determined as of the Offering Date (or such other limit
                as may be imposed by the Code) for each calendar year in which
                the employee participates in the Plan.

                    (b)  No more than 200% of the number of shares determined by
                using 85% of the fair market value of a share of the Company's
                Common Stock on the Offering Date as the denominator may be
                purchased by a participant on any single Purchase Date.

                    (c)  No employee shall be entitled to purchase more than the
                Maximum Share Amount (as defined below) on any single Purchase
                Date.  Not less than thirty days prior to the commencement of
                any Offering Period, the Board may, in its sole discretion, set
                a maximum number of shares which may be purchased by any
                employee at any single Purchase Date (hereinafter the "Maximum
                Share Amount").  In no event shall the Maximum Share Amount
                exceed the amounts permitted under Section 10(b) above.  If a
                new Maximum Share Amount is set, then all participants must be
                notified of such Maximum Share Amount not less than fifteen days
                prior to the commencement of the next Offering Period.  Once the
                Maximum Share Amount is set, it shall continue to apply in
                respect of all succeeding Purchase Dates and Offering Periods
                unless revised by the Board as set forth above.




                    (d)  If the number of shares to be purchased on a Purchase
                Date by all employees participating in the Plan exceeds the
                number of shares then available for issuance under the Plan, the
                Company will make a pro rata allocation of the remaining shares
                in as uniform a manner as shall be practicable and as the Board
                shall determine to be equitable.  In such event, the Company
                shall give written notice of such reduction of the number of
                shares to be purchased under a participant's option to each
                employee affected thereby.

                    (e)  Any payroll deductions accumulated in a participant's
                account which are not used to purchase stock due to the
                limitations in this Section 10 shall be returned to the
                participant as soon as practicable after the end of the Offering
                Period.

            11. WITHDRAWAL.

                    (a)  Each participant may withdraw from an Offering Period
                under the Plan by signing and delivering to the payroll
                department a notice on a form provided for such purpose.  Such
                withdrawal may be elected at any time prior to the 15th day of
                the month in which an Offering Period ends.

                    (b)  Upon withdrawal from the Plan, the accumulated payroll
                deductions shall be returned to the withdrawn employee and his
                or her interest in the Plan shall terminate.  In the event an
                employee voluntarily elects to withdraw from the Plan, he or she
                may not resume his or her participation in the Plan during the
                same Offering Period, but he or she may participate in any
                Offering Period under the Plan which commences on a date
                subsequent to such withdrawal by filing a new authorization for
                payroll deductions in the same manner as set forth above for
                initial participation in the Plan.

            12. TERMINATION OF EMPLOYMENT.  Termination of a participant's
          employment for any reason, including retirement or death or the
          failure of a participant to remain an eligible employee, terminates
          his or her participation in the Plan immediately.  In such event, the
          payroll deductions credited to the participant's account will be
          returned to him or her or, in the case of his or her death, to his or
          her legal representative.  For this purpose, an employee will not be
          deemed to have terminated employment or failed to remain in the
          continuous employ of the Company in the case of sick leave, military
          leave, or any other leave of absence approved by the Board of
          Directors of the Company; provided that such leave is for a period of
          not more than ninety (90) days or reemployment upon the expiration of
          such leave is guaranteed by contract or statute.

            13. RETURN OF PAYROLL DEDUCTIONS.  In the event an employee's
          interest in the Plan is terminated by withdrawal, termination of
          employment or otherwise, or in the event the Plan is terminated by the
          Board, the Company shall promptly deliver to the employee all payroll
          deductions credited to his account.  No interest shall accrue on the
          payroll deductions of a participant in the Plan.

            14. CAPITAL CHANGES.  Subject to any required action by the
          shareholders of the Company, the number of shares of Common Stock
          covered by each option under the Plan which has not yet been exercised
          and the number of shares of Common Stock which have been authorized
          for issuance under the Plan but have not yet been placed under option
          (collectively, the "Reserves"), as well as the price per share of
          Common Stock covered by each option under the Plan which has not yet
          been exercised, shall be proportionately adjusted for any increase or
          decrease in the number of issued shares of Common Stock resulting from
          a stock split or the



          payment of a stock dividend (but only on the Common Stock) or
          any other increase or decrease in the number of shares of
          Common Stock effected without receipt of consideration by the
          Company; provided, however, that conversion of any convertible
          securities of the Company shall not be deemed to have been "effected
          without receipt of consideration."  Such adjustment shall be made by
          the Board, whose determination in that respect shall be final, binding
          and  conclusive.  Except as expressly provided herein, no issue by the
          Company of shares of stock of any class, or securities convertible
          into shares of stock of any class, shall affect, and no adjustment by
          reason thereof shall be made with respect to, the number or price of
          shares of Common Stock subject to an option.

            In the event of the proposed dissolution or liquidation of the
          Company, the Offering Period will terminate immediately prior to the
          consummation of such proposed action, unless otherwise provided by the
          Board.  The Board may, in the exercise of its sole discretion in such
          instances, declare that the options under the Plan shall terminate as
          of a date fixed by the Board and give each participant the right to
          exercise his or her option as to all of the optioned stock, including
          shares which would not otherwise be exercisable.  In the event of a
          proposed sale of all or substantially all of the assets of the
          Company, or the merger of the Company with or into another
          corporation, each option under the Plan shall be assumed or an
          equivalent option shall be substituted by such successor corporation
          or a parent or subsidiary of such successor corporation, unless the
          Board determines, in the exercise of its sole discretion and in lieu
          of such assumption or substitution, that the participant shall have
          the right to exercise the option as to all of the optioned stock.  If
          the Board makes an option exercisable in lieu of assumption or
          substitution in the event of a merger or sale of assets, the Board
          shall notify the participant that the option shall be fully
          exercisable for a period of twenty (20) days from the date of such
          notice, and the option will terminate upon the expiration of such
          period.

            The Board may, if it so determines in the exercise of its sole
          discretion, also make provision for adjusting the Reserves, as well as
          the price per share of Common Stock covered by each outstanding
          option, in the event that the Company effects one or more
          reorganizations, recapitalizations, rights offerings or other
          increases or reductions of shares of its outstanding Common Stock, and
          in the event of the Company being consolidated with or merged into any
          other corporation.

            15. NONASSIGNABILITY.  Neither payroll deductions credited to a
          participant's account nor any rights with regard to the exercise of an
          option or to receive shares under the Plan may be assigned,
          transferred, pledged or otherwise disposed of in any way (other than
          by will, the laws of descent and distribution or as provided in
          Section 22 hereof) by the participant.  Any such attempt at
          assignment, transfer, pledge or other disposition shall be without
          effect.

            16. REPORTS.  Individual accounts will be maintained for each
          participant in the Plan.  Each participant shall receive promptly
          after the end of each Offering Period a report of his account setting
          forth the total payroll deductions accumulated, the number of shares
          purchased, the per share price thereof and the remaining cash balance,
          if any, carried forward to the next Offering Period.

            17. NOTICE OF DISPOSITION.  Each participant shall notify the
          Company if the participant disposes of any of the shares purchased in
          any Offering Period pursuant to this Plan if such disposition occurs
          within two years from the Offering Date or within twelve months from
          the Purchase Date on which such shares were purchased (the "Notice
          Period").  Unless such participant is disposing of any of such shares
          during the Notice Period, such participant  shall keep the
          certificates representing such shares in his or her name (and not in
          the name of a nominee) during the Notice Period.  The Company may, at
          any time during the Notice Period, place a legend or legends on any
          certificate representing shares acquired pursuant to the Plan
          requesting the Company's transfer agent to notify the Company of any
          transfer of the shares.





          The obligation of the participant to provide such notice shall
          continue notwithstanding the placement of any such legend
          on certificates.

            18. NO RIGHTS TO CONTINUED EMPLOYMENT.  Neither this Plan nor the
          grant of any option hereunder shall confer any right on any employee
          to remain in the employ of the Company or any Subsidiary or restrict
          the right of the Company or any Subsidiary to terminate such
          employee's employment.

            19. EQUAL RIGHTS AND PRIVILEGES.  All eligible employees shall have
          equal rights and privileges with respect to the Plan so that the Plan
          qualifies as an "employee stock purchase plan" within the meaning of
          Section 423 or any successor provision of the Code and the related
          regulations.  Any provision of the Plan which is inconsistent with
          Section 423 or any successor provision of the Code shall without
          further act or amendment by the Company or the Board be reformed to
          comply with the requirements of Section 423.  This Section 19 shall
          take precedence over all other provisions in the Plan.

            20. NOTICES.  All notices or other communications by a participant
          to the Company under or in connection with the Plan shall be deemed to
          have been duly given when received in the form specified by the
          Company at the location, or by the person, designated by the Company
          for the receipt thereof.

            21. SHAREHOLDER APPROVAL OF AMENDMENTS.

            Any required approval of the shareholders of the Company shall be
          solicited substantially in accordance with Section 14(a) of the
          Securities Exchange Act of 1934, as amended (the "Exchange Act"), and
          the rules and regulations promulgated thereunder.  Any such approval
          shall be solicited at or prior to the first annual meeting of
          shareholders held subsequent to the grant to an officer or director of
          the Company of an option under the Plan as then amended.  Such
          shareholder approval shall be obtained at a duly held meeting or by
          written consent only to the extent required by and by a vote that
          satisfies the requirements of Section 423 of the Code and Rule 16b-3
          as promulgated under the Exchange Act ("Rule 16b-3").

            22. DESIGNATION OF BENEFICIARY.

                    (a)  A participant may file a written designation of a
                beneficiary who is to receive any shares and cash, if any, from
                the participant's account under the Plan in the event of such
                participant's death subsequent to the end of an Offering Period
                but prior to delivery to him of such shares and cash.  In
                addition, a participant may file a written designation of a
                beneficiary who is to receive any cash from the participant's
                account under the Plan in the event of such participant's death
                prior to a Purchase Date.

                    (b)  Such designation of beneficiary may be changed by the
                participant at any time by written notice.  In the event of the
                death of a participant and in the absence of a beneficiary
                validly designated under the Plan who is living at the time of
                such participant's death, the Company shall deliver such shares
                or cash to the executor or administrator of the estate of the
                participant, or if no such executor or administrator has been
                appointed (to the knowledge of the Company), the Company, in its
                discretion, may deliver such shares or cash to the spouse or to
                any one or more dependents or relatives of the participant, or
                if no spouse, dependent or relative is known to the Company,
                then to such other person as the Company may designate.

            23. CONDITIONS UPON ISSUANCE OF SHARES; LIMITATION ON SALE OF
          SHARES.  Shares shall




          not be issued with respect to an option unless the exercise
          of such option and the issuance and delivery of such shares
          pursuant thereto shall comply with all applicable provisions of
          law, domestic or foreign, including, without limitation, the
          Securities Act of 1933, as amended, the Exchange Act, the rules and
          regulations promulgated thereunder, and the requirements of any stock
          exchange upon which the shares may then be listed, and shall be
          further subject to the approval of counsel for the Company with
          respect to such compliance.

            If the purchase of shares on a Purchase Date is exempt from the
          operation of Section 16(b) of the Exchange Act by the operation of
          Rule 16b-6 promulgated under the Exchange Act, to the extent required
          by the Exchange Act, shares purchased by an person subject to the
          requirements of Section 16(b) of the Exchange Act may not be sold
          prior to the expiration of six (6) months from the Purchase Date on
          which such shares were purchased (or on such other date as may be
          required by Rule 16b-3 or any successor rule).

            24. APPLICABLE LAW.  The Plan shall be governed by the substantive
          laws (excluding the conflict of laws rules) of the State of
          California.

            25. AMENDMENT OR TERMINATION OF THE PLAN.  This Plan shall be
          effective April 1, 1991 or such later date as the Board determines,
          and shall continue until the earlier to occur of termination by the
          Board, issuance of all of the shares of Common Stock reserved for
          issuance under the Plan, or ten (10) years from the adoption of the
          Plan by the Board.  The Board of Directors of the Company may at any
          time amend or terminate the Plan, except that any such termination
          cannot affect options previously granted under the Plan, nor may any
          amendment make any change in an option previously granted which would
          adversely affect the right of any participant, nor may any amendment
          be made without approval of the shareholders of the Company obtained
          in accordance with Section 21 hereof within 12 months of the adoption
          of such amendment (or earlier if required by Section 21) if such
          amendment would:

                    (a)  increase the number of shares that may be issued under
                the Plan;

                    (b)  change the designation of the employees (or class of
                employees) eligible for participation in the Plan; or

                    (c)  constitute an amendment for which shareholder approval
                is required in order to comply with Rule 16b-3 (or any successor
                rule) of the Exchange Act.