The IBM PC 5150, Revision A vs Revision B

T1Covered by 1 source · first reported by Raspberry Pi / Arduino / Adafruit at 28 Oct, 20:39 UTC

Dave Farquhar at The Silicon Underground compares the two versions of the original IBM PC 5150, pegged to the October 27, 1982 date on the Revision B BIOS. The fronts look identical. The back tells you which one you have: Revision B is marked with a B in a circle and has positions for five […]

Sources

• T1The IBM PC 5150, Revision A vs Revision BRaspberry Pi / Arduino / Adafruit28 Oct, 20:39