4 layers304.8 × 215.9 mm

Boards in 3 GitHub repositories, designed in KiCad, that use the 74S138PC by Texas Instruments (0℃~+70℃ 5V PDIP-16 Interface - Specialized). See how each wires it, with its parts, size, README and files; the 74S138PC’s symbol, footprint and pinout are on its own page.


kev-ju/PC-Retro-MTM
Modern KiCad version of the IBM 5150 system board originally created by MTM Scientific, Inc.

btb/Telcon-Ambassador
The Telcon Ambassador was a series of portable terminals by Telcon Industries (who later created the Zorba portable computer).