Pdp-7
computer
A minicomputer sold by DEC in 1964. It had a memory cycle time of 1.75 microseconds and add time of 4 microseconds. I/O included a keyboard, printer, paper-tape and dual transport DECtape drives (type 555).
DEC provided an “advanced” Fortran II compiler, a Symbolic Assembler, Editor, DDT Debugging System, Maintenance routines and a library of arithmetic, utility and programming aids developed on the program-compatible PDP-4.
[DEC sales brochure].
The PDP-7 was considered reliable enough (when properly programmed) to be used for control of nuclear reactors and such.
Around 1970 Ken Thompson built the operating system that became Unix on a scavenged PDP-7 so he could play a descendant of the SPACEWAR game.
(1995-03-10)
Read Also:
- Pdp assembly language
language (PAL) The assembly language for the PDP-8 and PDP-11. [Description?] (1995-01-26)
- Pdq
Informal. 1. immediately; at once: You’d better get started P.D.Q. abbreviation 1. pretty damn quick also pdq, initialism for pretty damn quick, attested from 1875. adverb Pretty damn quick (1875+) 1. Physicians Data Query (of the NCI) 2. pretty damn quick 3. pretty damn quickly
- P-d ratio
noun 1. short for price-dividend ratio
- Pdry
People’s Democratic Republic of Yemen
- Pds
1. Processor Direct Slot. 2. partitioned data set. partitioned data set