CADR machine. When they were first built, yes. The incompatibility is prompted by the imminent arrival of the twenty-first century. Secondly, Symbolics only hired four full-time and one part-time person from the AI lab (see below). First lisp machine. I remember when I first wrote Lisp for a computer science class. A popular recipe for new programming languages in the past 20 years has been to take the C model of computing and add to it, piecemeal, parts taken from the Lisp model, like runtime typing and garbage collection." ~1974. CONS machine. 2nd generation of CONS. 25 prototype were sold. Unlike other Lisp machines of its day, the Symbolics line was commercially available as a home computing workstation from Symbolics, Inc., which made it essentially the first of its kind. At MIT. Lisp Machines have been developed for AI programming in the mid 70s, because machines at that time were not powerful enough for complex AI software. Other companies, like Texas Instruments and Xerox , abandoned the field. But raw performance wasn't the only advantage. By the early 1990s, most commercial LISP companies had failed, including Symbolics, LISP Machines Inc., Lucid Inc., etc. It lead to the first workstations with megapixel screen, networking, large memory, multiple processes, mouse, graphical user interface, etc. Like other Lisp machines, nearly all of the code was a dialect of Lisp, including all applications, operating system code, and even microcode at its most basic. MGL is a Common Lisp machine learning library by Gábor Melis with some parts originally contributed by Ravenpack International. A LISP program is a function applied to data, rather than being a sequence of procedural steps as in FORTRAN and ALGOL. For instance, hot-patching the microcode and adding machine instructions. LISP was founded on the mathematical theory of recursive functions (in which a function appears in its own definition). There were many things that you simply cannot do on stock hardware without emulating the LispM hardware. Uses Knight keyboard. First of all, had there been only one Lisp machine company as Stallman would have preferred, exactly the same people would have left the AI lab. To understand the history of lisp machine keyboards, you must know some history of lisp machines. First, in Lisp Machine Lisp a year between 0 and 99 always has 1900 added to it. SMBX.org is the official online home of the Symbolics Lisp Machine Museum. Since the LispM OS was written in Lisp and shared the address space The first Lisp Machines were using micro-coded processors with special instruction sets tailored for compiled and interpreted Lisp. Lisp Machines are computers (hardware) designed to run lisp programing language efficiently. It mainly concentrates on various forms of neural networks (boltzmann machines, feed-forward and recurrent backprop nets). ~1978. 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