| News & PressGreen Hills Software to Chair and Exhibit at
      12th Software Design for Medical Devices Conference
 SANTA BARBARA, CA—April 24, 2009 — Green Hills Software,
        Inc., the world leader in certified safe and secure
        real-time operating systems (RTOS),will continue its role as chair
        for IQPC's medical conferences on software development for medical devices
        in Philadelphia, PA April 27-29th. Green Hills Software will also be
        demonstrating its latest embedded software platform solutions specifically
        designed for the medical device market. Green Hills Software speakers will present:  
        
          | Topic: Leveraging
              OTS Software for Building Safe Devices |  
          | When: | Tuesday (April 28th, 2009) 11:45am — 12:30pm |  
          | Where: | The Hub Cira Centre – Philadelphia, PA |  
          | Who: | Joe Fabbre, Technical Solutions Manager, Green Hills
            Software |  
          | Synopsis: | Off-the-Shelf (OTS) software can be used to decrease
            time-to-market and increase the reliability and safety of medical
            devices if the right technology is selected. The wrong choice of
            key technologies can cripple your ability to create strong arguments
            about the safety of your device, ultimately endangering your ability
            to get through approval and make it to market at all. We’ll
            examine several different OTS technologies and identify fundamental
            properties of each that can be leveraged in the creation of an assurance
            case including: 
                 Operating SystemsDevelopment ToolsVirtualization Technology
                 |   Green Hills Software will be demonstrating the latest innovations in
        software technologies for building safe, reliable medical devices, based
        on its Platform for Medical Devices. 
        Platform for Medical Devices – incorporates
          the safety-certified INTEGRITY® real-time operating system, a broad
          range of middleware including secure guest OS virtualization, communications
          protocols and graphics, as well as an integrated tool suite that addresses
          software developers' needs throughout the software development process.
          INTEGRITY is available with complete software lifecycle data and supporting
          evidence for use during the FDA approval process, and has been used
          in Class II and Class III devices. This platform will be demonstrated
          on the latest Texas Instruments Zoom™ OMAP35x development kit.  About Green Hills SoftwareFounded in 1982, Green Hills Software, Inc. is the technology leader
        in device software optimization (DSO) and real-time operating systems
        (RTOS) for 32- and 64-bit embedded systems. In 2008, the Green Hills
        INTEGRITY-178B RTOS was the first and only operating system to be certified
        by the NSA to EAL6+ High Robustness, the highest level of security ever
        achieved. Our INTEGRITY® and velOSity™ real-time
        operating systems, µ-velOSity™ microkernel, compilers, IPv6-ready
        TCP/IP networking stacks, GateD® Layer 2 switching
        and Layer 3 routing, routing, MULTI® and AdaMULTI™ integrated
        development environments, DoubleCheck™ integrated
        static analyzer and TimeMachine™ tool
        suite offer a complete development solution that addresses both deeply
        embedded and high-reliability applications. Green Hills Software is headquartered
        in Santa Barbara, CA, with European headquarters in the United Kingdom.
        Visit Green Hills Software on the web at www.ghs.com.
 | 
  
    | North American Sales Contact:Green Hills Software, Inc.
 30 West Sola Street,
 Santa Barbara, CA 93101,
 Tel: 805-965-6044
 Fax: 805-965-6343
 Website: www.ghs.com
 Email: sales@ghs.com
 Media Contacts: Green Hills Software, Inc.
 Barbel French
 Tel: 805-965-6044
 Email: bfrench@ghs.com
 
 | International Sales Contact:Green Hills Software Ltd
 Fleming Business Centre
 Leigh Road
 Eastleigh
 Hampshire SO50 9PD
 UNITED KINGDOM
 Tel: +44 (0)2380 649660
 Fax: +44 (0)2380 649661
 Email: mktg-europe@ghs.com
 |