EXHIBIT 99.1

CONTACT:
Elaine Parfitt
Chief Financial Officer
Integral Systems, Inc.
Phone:  301-731-4233
Fax:  301-731-9606

                   INTEGRAL SYSTEMS ACQUIRES SAT CORPORATION

Lanham, Md., September 6, 2000 -- Integral Systems, Inc. (NASDAQ: ISYS) today
announced its acquisition of SAT Corporation (SAT).  SAT is a privately held
company and worldwide supplier of automatic signal monitoring systems and
networks for satellite and terrestrial monitoring applications.

Under the terms of the acquisition agreement, Integral issued 650,000 shares of
its common stock to Mr. Herbert Pardula, SAT's Chief Executive Officer and sole
shareholder, in a transaction valued at approximately $10.0 million.  Integral
intends to account for the acquisition using the pooling of interests method of
accounting.  For the fiscal year ended March 31, 2000, SAT earned $7.9 million
in revenue and posted $450,000 of income before taxes (unaudited).

Steven R. Chamberlain, Chairman and Chief Executive Officer for Integral,
commented, "The acquisition of SAT is a natural fit for us and instantly expands
our product offerings to our commercial client base.  We intend to leave SAT as
a stand-alone operating entity, and are excited about the possibilities and
opportunities that this acquisition will afford us.  Mr. Pardula has been
retained by SAT to ensure a smooth integration between our two organizations."

Mr. Pardula stated: "The industry name recognition of Integral Systems coupled
with Integral's financial muscle will allow SAT to aggressively pursue larger
contracts to accelerate its revenue and profit growth.  We expect to immediately
begin working together to jointly market Integral's and SAT's companion products
to satellite owners/operators to offer single vendor system solutions.

Founded in 1982, Integral Systems is a leading provider of satellite ground
systems and has supported over 100 different satellite missions for
communications, science, meteorological and earth resource applications.  The
Company continues to enhance its current position in government and commercial
marketplaces by offering innovative software products and custom services for
ground system development and integration.  Customers throughout the world are
now using Integral Systems' EPOCH 2000 software product, the world's first
commercial-off-the-shelf satellite command and control software package.  The
Orbit Analysis System (OASYS) module of EPOCH 2000 also is sold as a stand-alone
product and allows operators to perform satellite orbit determination and
control.  In addition to these products, the Company provides systems for
satellite payload processing, spacecraft integration and test, simulation, and
environmental monitoring.  Integral Systems has more than 220 employees working
at Company headquarters in Lanham, Maryland, and at other U.S. locations.

Except for statements of historical facts, this news release contains forward-
looking statements about the Company.  Such statements are subject to risks and
uncertainties, including the risks associated with acquiring and integrating
other companies, the Company's reliance on contracts funded by the U.S.
Government, competition in the ground systems industry, rapid technological
changes in the satellite industry and those other risks noted in the Company's
SEC filings, which may cause actual results to differ materially.

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