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This 18-bit machine, first shipped in 1962, [1] was a compromise: "with slower memory and different packaging" than the PDP-1, but priced at $65,000 - less than half the price of its predecessor. [ 2 ] : p.4 All later 18-bit PDP machines ( 7 , 9 and 15 ) are based on a similar, but enlarged instruction set , more powerful than, but based on the ...
The DECSYSTEM-20 was a family of 36-bit Digital Equipment Corporation PDP-10 mainframe computers running the TOPS-20 operating system and was introduced in 1977. PDP-10 computers running the TOPS-10 operating system were labeled DECsystem-10 as a way of differentiating them from the PDP-11 .
The PDP-7 was introduced in December 1964, and about 120 were eventually produced. [25] An upgrade to the Flip Chip led to the R series, which in turn led to the PDP-7A in 1965. [26] The PDP-7 is most famous as the machine for which the Unix operating system was originally written. [27] Unix ran only on DEC systems until the Interdata 8/32. [28]
The Professional 325 (PRO-325), Professional 350 (PRO-350), and Professional 380 (PRO-380) are PDP-11 compatible microcomputers.The Pro-325/350 were introduced in 1982 and the Pro-380 in 1985 by Digital Equipment Corporation (DEC) as high-end competitors to the IBM PC.
The use of RADIX 50 was the source of the filename size conventions used by Digital Equipment Corporation PDP-11 operating systems. Using RADIX 50 encoding, six characters of a filename could be stored in two 16-bit words, while three more extension (file type) characters could be stored in a third 16-bit word.
The PDP–11 is a series of 16-bit minicomputers originally sold by Digital Equipment Corporation (DEC) from 1970 into the late 1990s, one of a set of products in the Programmed Data Processor (PDP) series. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC's most successful product lines.
The PDP-16 family of modules was introduced in 1971, [3] and a pre-assembled system using these modules, the PDP-16/M [4] [5] was introduced in 1972. [3] The 16/M was nicknamed "Subminicomputer" and described as "a small microprogrammable computer." [4] The general-purpose modules included: components to build a data path (registers, memories ...
Modified PDP-7 under restoration in Oslo, Norway PDP-7 at living computer museum The PDP-7 is an 18-bit minicomputer produced by Digital Equipment Corporation as part of the PDP series. Introduced in 1964, [ 3 ] : p.8 [ 4 ] shipped since 1965, it was the first [ 5 ] to use their Flip-Chip technology.