The PDP-9, introduced in 1967, was DEC's fourth 18-bit computer system. It was upward compatible from the PDP-7, introducing a more advanced form of memory management. A cost-reduced version, the PDP-9/L, was introduced in 1968.
Photographs:
Option | Description | Capacity |
CPU and memory | PDP-9 | 4KW - 32KW |
CPU options | KE09A EAE, extended arithmetic element | |
KG09A memory extension control | ||
KP09A power fail detection | ||
KX09A memory protection control | ||
Console | KSR-33 Teletype | |
Additional terminals | LT09 and KSR-33 Teletypes | 1-4 lines |
Paper tape | PC09A paper tape reader and punch | |
Real time clock | integral | |
Line printer | Type 647E line printer (sixbit ASCII) | |
LP09 line printer (sevenbit ASCII) | ||
DECtape | TC02/TU55 DECtape | 148KW |
Disk | RF09/RS09 fixed head disk | 2.1MW |
RB09 fixed head disk | 1MW | |
Magnetic tape | TC59 magnetic tape (9 track only) |
Updated 08-Aug-2020 by Bob Supnik (simh AT groups DOT io - anti-spam encoded)