Short for Programmable Data Processor, PDP was a series of
computers developed by Digial.
The first PDP, the PDP-1, was developed in 1960
and had five-megacycle circuits, a magnetic core memory, and fully
parallel processing with a computation rate of 100,000 additions
per second. The PDP series included the PDP-4, PDP-6, PDP-7, PDP-8,
PDP-9, PDP-10, PDP-11, PDP-12, PDP-14, and PDP-15 computer.