PDP-7

PDP-7
A modified PDP-7 under restoration in Oslo, Norway
ManufacturerDigital Equipment Corporation
Product family
Programmed Data Processor
TypeMinicomputer
Released1965 (1965)
Introductory price
US$72,000 (equivalent to $735,586 in 2025)
Units sold120
Units shipped120
DECsys, Unix (as "Unics")
Memory4K words (9.2 KB) (expandable up to 64K words (144 KB).)
StoragePaper-tape and dual transport DECtape drives (type 555)
DisplayPrinter
InputKeyboard
PlatformPDP 18-bit
PDP-1
PredecessorPDP-4
SuccessorPDP-9
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, shipped starting in 1965, it was the first to use their Flip-Chip technology. With a cost of US$72,000, it was cheap but powerful by the standards of the time. The PDP-7 is the third of Digital's 18-bit machines, with essentially the same instruction set architecture as the PDP-4 and the PDP-9.