Today in 1981, IBM introduced the Model 5150 PC (personal computer). The IBM PC ran on the Intel 8088 microprocessor at 4.77 mHz with one or two 160K floppy disk drives. It had 16 kilobytes of memory, no built-in clock, no built-in serial or parallel ports, and no built-in video capability -- it was available with an optional color monitor. Prices started at $1,565.
Thirty years ago it forever changed the face of computing and the changes keep coming.