The PDP-6 (Programmed Data Processor-6) was a computer model developed by Digital Equipment Corporation (DEC) in 1963. It was influential primarily as the prototype (effectively) for the later PDP-10; the instruction sets of the two machines are almost identical.The PDP-6 was DEC's first "big" machine. It used 36-bit words, in common with other large computers at the time from companies like IBM, Honeywell and General Electric. See: Why 36-bit word length?. Addressing remained 18-bit, as in earlier DEC machines, allowing for a 256 kword main memory. Memory was implemented using magnetic cores; a typical system included 32,768 words (equivalent to 160kB on modern machines).
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<computer> Programmed Data Processor model 6. A computer designed around 1960 with more or less exactly the same hardware architecture as the PDP-10. It already had multi-user time sharing and batch processing and multi-level priority interrupts (1996-12-21)
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