(1981) IBM makes it personal with the 5150 computer$1,565 will get you 16K of RAM, a 4.77 MHz CPU, and DOS 1.0 on IBM’s new entry into the marketplace, a machine marketed as a personal computer, or ‘PC.’ Open standards mean third parties can write software or build peripherals, which will contribute to the 5150’s huge success.The IBM Personal Computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform. It is IBM model number 5150, and was introduced on August 12, 1981. It was created by a team of engineers and designers under the direction of Don Estridge of the IBM Entry Systems Division in Boca Raton, Florida.
Inventor: Philip Don Estridge Original IBM Personal Computer motherboard, IBM 5150. It has five 8-bit Industry Standard Architecture slots, and two DIN connectors for keyboard and cassette interface.