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      STACKER NOTE                                         STACKER NOTE
                      IBM ANNOUNCES STACKER LICENSE                             
      STAC FAX  1116 (04-08-1994)
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      April 6, 1994
      IBM Wednesday  announced a worldwide agreement to license Stac
      Electronics' patented  Stacker(a) LZS(a) data compression
      technology for all IBM software including PC DOS and OS/2.  IBM
      plans to provide Stacker data compression technology in future
      versions of PC DOS.
      
      "Data compression technology has become important to computer
      users because it maximizes valuable hard disk space,"  said Lee
      Reiswig, president of IBM's Personal Software Products division.
      "We recognize that data compression is important to  our
      customers. Stac and IBM are committed to providing an industry-
      leading compression solution that is both stable and reliable."
      
      Stac's President and CEO Gary Clow said, "IBM's  licensing of the
      Stacker LZS technology reinforces Stac's status as the supplier
      of the premier data compression technology across multiple
      platforms.  With this agreement, we expect to gain even greater
      acceptance in both the corporate and home markets."
      
      Product Background
      
      Stacker data compression technology, now in its fourth
      generation, is the first product of its kind to break the 2:1
      compression barrier.  Beyond increasing storage capacity, Stacker
      4.0 provides new safety features for enhanced reliability and a
      comprehensive tool set for using Stacker and managing Stacker
      drives.  Stac's OS/2 compression technology is a leading real-
      time data compression product available for OS/2-based PCs.  For
      PC DOS and OS/2, Stacker provides instant conversion of other
      compression formats, allowing users to easily update their disks
      to the proven Stacker format.
      
      PC DOS is IBM's full-featured, enhanced version of the  Disk
      Operating System.  In addition to compression, PC DOS  includes
      exclusive features such as PCMCIA support, PenDOS(b)  enabling
      for pen-based computing, memory optimizer, file backup/retrieval,
      program scheduler and virus protection.OS/2 is IBM's award-
      winning 32-bit operating system software that provides high-
      performance pre-emptive multitasking and multithreading
      capabilities.
      
      Stac Electronics (NASDAQ: STAC), based in Carlsbad, California,
      is a leading supplier of high performance data compression
      products for personal computers.  Stac's products, implemented in
      software and silicon, are sold directly by the company and
      through retail and OEM sales distribution channels worldwide.
      
      IBM's Personal Software Products division,  headquartered in
      Austin, Texas, is an industry leader in the  development of
      operating systems, including OS/2 and PC DOS, as  well as
      networking software and other advanced technologies.  (a)
      Indicates trademark or registered trademark of Stac Electronics.
      (b)  Indicates trademark or registered trademark of the
      International Business Machines Corporation.
      
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      Copyright 1994 Stac Electronics