PDP-9

The PDP-9 was a very popular, eighteen bit computer, with a cycle time of one microsecond. Over 430 were sold world-wide. Sites in Australia included Government Aircraft Factory, Australian Iron and Steel, Melbourne University Physics Dept, Latrobe University and the Parkes Radio Telescope. The PDP-9 was one of the first small computers to have an Operating System, initially based on DECtape, later disk. It was priced at $35,000 for 8K words (16K bytes) of memory and a high speed paper tape reader and punch.