Systems software

Article Abstract:

AT&T and Sun Microsystems' Nov 1989 introduction of Release 4.0 of UNIX System V may have established the definitive UNIX standard, while the OS/2 operating system jointly developed by Microsoft Corp and IBM gains little market share against the dominant MSDOS. UNIX V 4.0 integrates several UNIX versions, including the University of California's UNIX BSD, Microsoft's Xenix, Sun's SunOS, and AT&T's own System V. The proposed OSF/1 from the competing UNIX consortium, the Open Software Foundation, will not debut until at least Nov 1990 because of a switch to Carnegie Mellon University's MACH variant of UNIX as a base. Only 200,000 copies of OS/2 have been sold, while millions of MSDOS packages are sold annually. The popularity of Windows on MSDOS, the large memory demands of OS/2, and Microsoft's promotion of Windows over OS/2 are slowing acceptance of OS/2.

Product development, Product information, Microsoft Corp., T, Market share, Sun Microsystems Inc., MSFT, American Telephone and Telegraph Co., Business conditions, Competition, Review of Past Year, Unix System V 4.0 (Operating system), SUNWU, OS/2 1.2 (Operating system)

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Automating software: proceed with caution

Article Abstract:

The use of computer aided software engineering (CASE) tools is increasing. CASE tools appear to improve software reliability, make programs easier to maintain, improve programmer productivity, and make larger projects practical. CASE tools are used in the design, implementation, support, and planning of a software program. CASE tools range from small and simple microcomputer packages to large and integrated mainframe-based systems. The current trend for CASE tools is towards the integration of more of the development cycle and to improve the consistency of the results. Measuring the productivity increases due to CASE tools is difficult. Implementing CASE tools requires considerable effort, including retraining programmers and reorganizing designers and programmers' duties.

Standard, Standardization, Industrial productivity, Computer aided software engineering, Productivity, Integrated Approach, Computer-Aided Software Engineering, Programming Management

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Ada: From promise to practice?

Article Abstract:

The US Department of Defense (DOD) is preparing for a proliferation of applications with Ada in embedded systems, ranging from planes and missiles to tanks and other ground equipment. The US Air Force's advanced tactical fighter (ATF) is intended to be its 'top gun' aircraft during the first part of the 21st century. The ATF, which may be viewed as a computer that flies, may store many megabytes of code embedded in a dozen subsystems, all of them centrally controlled and monitored. To coordinate the software development project, the Air Force has ordered that all software for the current phase of ATF development be produced in Ada. Production contracts for the flying computer may exceed $40 billion.

Aircraft, National security, Application development software, United States. Air Force, Applications programming, Outlook, Market Analysis, Military, Compiler/decompiler, ADA, technical

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