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PDP-11/23 PLUS
PDP-11/23 PLUS with two RL02s, TK50, and third party SCSI.
Manufacturer: Digital Equipment Corporation
Year Introduced: November 1981
Word Size: 16 bit
Physical Address Size: 22 bit
Virtual Address Size: 16 bit
Bus Architecture: QBUS

The PDP-11/23 PLUS, introduced in November 1981, introduced an integrated solution on a single quad-width QBUS board, which included F-11 CPU, memory management unit, a socket for inserting an KEF11-A floating point unit, and two asynchronous serial lines, which had a maximum speed of 19,200 baud.

Essential parts that make up a PDP 11/23 PLUS