Intel P8279-5 Display Driver Board 31-710011-001 Rev X1 1976 Vintage PCB

Intel P8279-5 Display Driver Board 31-710011-001 Rev X1 1976 Vintage PCB

This is a vintage Intel Display Driver Board built around the Intel P8279-5 keyboard and display controller IC, dated 1976. The board carries Intel assembly number 31-710011-001 (also referenced as 31-710011-00), revision X1. The 8279 was Intel's dedicated programmable keyboard and display interface controller, introduced in the mid-1970s to offload keyboard scanning and multiplexed display management from the host CPU in early microcomputer and industrial control designs.

Specifications & What's Included

• Board designation: Display Driver Board
• Assembly part number: 31-710011-001 (also listed as 31-710011-00)
• Assembly reference: 01238
• Board revision: Rev X1
• Main controller IC: Intel P8279-5 (8279 Programmable Keyboard/Display Interface)
• IC date code: L9500585 — manufactured 1976
• Additional ICs: multiple DIP-package logic and support chips visible on board
• Connectors: edge connector and red DIP header connector visible on board
• Form factor: bare PCB module (no chassis or enclosure)
• Board only — no additional accessories Intel 8279 (P8279-5) is a programmable peripheral interface chip designed specifically to handle keyboard scanning and multiplexed seven-segment or LED display driving in early microprocessor systems. It was widely used in 8080- and 8085-based systems from the mid-1970s through the early 1980s, relieving the host CPU of the repetitive task of scanning a keyboard matrix and refreshing a multiplexed display. Systems built around Intel's MCS-48 and MCS-51 families, early industrial terminals, process controllers, and scientific instruments of the era commonly incorporated the 8279 for front-panel keyboard and numeric display interfaces. This display driver board would have served as the interface between a host processor and a front-panel numeric or alphanumeric display assembly in an instrument or industrial control system of the 1976 period. Today, these boards are sought by technicians maintaining vintage Intel-based equipment, engineers studying early microprocessor peripheral design, and collectors of 1970s-era computing hardware.
  Condition: Used
  This Intel P8279-5 Display Driver Board (ASSY 31-710011-001, Rev X1) has been inspected and appears to be in good condition. The board shows normal aging consistent with its 1976 manufacture date — light oxidation on component leads is typical and expected for a board of this era. The PCB itself is intact with no visible cracks, broken traces, or missing components. The Intel P8279-5 IC and surrounding DIP components are all present and seated. Please view our photo set and contact us if you have any questions. Visit Our Store

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