Lisp machines were general-purpose computers designed (usually through hardware support) to efficiently run Lisp as their main software language. In a sense, they were the first commercial single-user workstations. Despite being modest in number (perhaps 7000 units total as of 1988), many now-commonplace technologies (including effective garbage collection, laser printing, windowing systems, computer mice, high-resolution bit-mapped graphics, computer graphic rendering and a number of networking innovations) were commercially pioneered on Lisp machines.
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1. <architecture> Any machine (whether notional or actual) whose instruction set is Lisp. 2. A line of workstations made by Symbolics, Inc. from the mid-1970s (having grown out of the MIT AI Lab) to late 1980s. All system code for Symbolics Lisp Machines was written in Lisp Machine Lisp. Symbolics Lisp Machines were also notable for having had space-cadet keyboards. [More details and historical background?] Lisp Machine Museum. (2003-07-03)