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- Q5276238 subject Q7216541.
- Q5276238 subject Q8369193.
- Q5276238 subject Q8371203.
- Q5276238 abstract "Digitek was an early system software company located in Los Angeles, California.Digitek, co-founded in the early 1960s by three equal partners (James R. Dunlap, President plus Vice Presidents Donald Ryan and Donald Peckham who had worked together at Hughes Aircraft Company, in Culver City, California ), authored many of the programming language systems (compiler + runtime + intrinsic library) on various manufacturers' computer systems, including IBM, SDS, GE, Bell Labs, and many others. In the 1960s Digitek advertised frequently in Scientific American and Datamation magazines.Digitek's first compiler customer was Scientific Data Systems (SDS), a computer mainframe hardware company founded by Max Palevsky in 1961 and later acquired by Xerox in 1969.Digitek wrote language systems for almost every popular programming language at the time including FORTRAN, PL/I, SIMSCRIPT, COBOL, and BASIC. Some Digitek compilers are the IBM System 360 G Level FORTRAN and Bell Labs PL/I. Due to their implementation in a virtual machine technology called POPS (for "Programmed Operators"), the company's compilers could be developed rapidly and had a common "footprint". This later allowed a successor company, Ryan-McFarland Corporation, to capitalize on the rapid expansion of the microcomputer market in the late 1970s and early 1980s by providing POPS-based compilers to virtually all of the emerging computer vendors at the time. Among these products were RM/COBOL and RM/BASIC for Tandy's TRS-80, and IBM Professional FORTRAN (and its twin, RM/FORTRAN) for MS-DOS. Ryan-McFarland was sold to an Australian company (Austec) in 1987, and the POPS-based compiler technology was subsequently sold to Language Processors, Inc. (later renamed Liant Software Corporation). Liant was purchased by Micro Focus International in 2008, where the technology, in the form of the RM/COBOL-85 compiler and runtime system, is being sold. In 2012, applications built using this POPS implementation of COBOL are still in widespread use throughout the world.Lahey Computer Systems F77L was also a POPS-based Fortran 77 compiler, for MS-DOS. Don Ryan, Thomas M Lahey, Doug Ahl, Noel Vasquez, David McFarland, and Jack Perrine (developer of Univac 1108 Fortran V and Athena Fortran) had all worked at Digitek at the same time.Digitek went down when taken into regress by GE for failing to deliver a promised PL/I compiler for the Multics project. Don Peckham was bought out. With Dave McFarland, also from Digitek, Don Ryan founded Ryan−McFarland which continued the compiler writing work.James Dunlap was quoted in the 1970s as saying that the richest man in the world in the year 2000 would be an ex-programmer. He was correct, of course, but it turned out to be Bill Gates and not Dunlap.".
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- Q5276238 comment "Digitek was an early system software company located in Los Angeles, California.Digitek, co-founded in the early 1960s by three equal partners (James R. Dunlap, President plus Vice Presidents Donald Ryan and Donald Peckham who had worked together at Hughes Aircraft Company, in Culver City, California ), authored many of the programming language systems (compiler + runtime + intrinsic library) on various manufacturers' computer systems, including IBM, SDS, GE, Bell Labs, and many others.".
- Q5276238 label "Digitek".