![]() ![]() Many of the PDP-11 and VAX-11 processors never ran DEC's operating systems (RSTS or VAX/VMS), but instead, they ran UNIX, which was first licensed in 1975. The UNIX Operating System became a killer application for the DEC PDP-11 and VAX-11 minicomputers during roughly 1975–1985. Instead, let's say '1-2-3 compatible'." WordStar became the most popular word processor during much of the 1980s. Let's not say 'PC compatible', or even ' MS-DOS compatible'. Noting that computer purchasers did not want PC compatibility as much as compatibility with certain PC software, InfoWorld suggested "let's tell it like it is. Lotus 1-2-3 similarly benefited sales of the IBM PC. ![]() Others also developed software, such as EasyWriter, for the Apple II first because of its increasing sales. BYTE wrote in 1980, "VisiCalc is the first program available on a microcomputer that has been responsible for sales of entire systems", and Creative Computing 's VisiCalc review is subtitled "reason enough for owning a computer". Because it was not released for other computers for 12 months, people spent US$100 (equivalent to $400 in 2022) for the software first, then $2,000 to $10,000 on the requisite Apple II. VisiCalc was released in 1979, becoming the earliest generally agreed-upon example of a killer application.Īlthough the term was coined in the late 1980s one of the first retroactively recognized examples of a killer application is the VisiCalc spreadsheet, released in 1979 for the Apple II series computer. ![]()
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