Description
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 included
Applications
The 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.
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.
Warranty Information
Additional Information
Brand: |
Intel |
Model: |
P8279-5 |
MPN: |
31-710011-001 |
Secondary Model: |
31-710011-00 |
Type: |
Display Driver Board / Keyboard-Display Controller PCB |
SKU: |
34453 |
Chipset / Main IC: |
Intel P8279-5 (8279 Keyboard/Display Controller) |
Board Revision: |
Rev X1 |
Date Code / Year: |
1976 |
Assembly Number: |
01238 |
Form Factor: |
Bare PCB / Card Module |
Condition: |
Used – Inspected and Pulled from Working Environment |
Seller Notes: |
Board only; no chassis or enclosure included. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
Intel P8279-5 Display Driver Board 31-710011-001 Rev X1 (1976) has been inspected and is in good condition. Board is intact, all ICs present. Normal aging for a 1976-era PCB. Please contact us with any questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
