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Reference.org
PDP-11/73
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<p>The PDP-11/73 (strictly speaking, the MicroPDP-11/73) was the third generation of the <a href="/facts/PDP-11/9HkGUzFn">PDP-11</a> series of 16-bit <a href="/facts/Minicomputer/g8hvpQxe">minicomputers</a> produced by <a href="/facts/Digital_Equipment_Corporation/ztxs6keA">Digital Equipment Corporation</a> to use <a href="/facts/Large_Scale_Integration/fjn6vg7C">LSI</a> processors. Introduced in 1983, this system used the <a href="/facts/DEC_J-11/bUXMGAdr">DEC J-11</a> chip set and the <a href="/facts/Q-Bus/kYuY9wms">Q-Bus</a>, with a clock speed of 15.2 MHz. </p><p>The 11/73 (also known as the KDJ11A) is a dual height module with on board bootstrap, cache and bus interface. From a speed perspective it suffered from accessing memory over the <a href="/facts/Q-bus/kYuY9wms">Q-bus</a> rather than the private memory interconnect bus adopted by the later PDP-11/83. </p>