![]() The ease of programming of the PDP-11 made it very popular for general-purpose computing uses also. The PDP-11 replaced the PDP-8 in many real-time computing applications, although both product lines lived in parallel for more than 10 years. Further, the innovative Unibus system allowed external devices to be easily interfaced to the system using direct memory access, opening the system to a wide variety of peripherals. ![]() ![]() The PDP-11 included a number of innovative features in its instruction set and additional general-purpose registers that made it much easier to program than earlier models in the PDP series. The PDP-11 is considered by some experts to be the most popular minicomputer. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC's most successful product lines. The PDP-11 is a series of 16-bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the 1990s, one of a set of products in the Programmed Data Processor (PDP) series. ![]() A PDP-11/40 CPU is at the bottom, with a TU56 dual DECtape drive installed above it.īATCH-11/DOS-11, DSM-11, IAS, P/OS, RSTS/E, RSX-11, RT-11, Ultrix-11, Seventh Edition Unix, SVR1, 2BSD ![]()
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