Partial History the IBM PC 1967: IBM builds the worlds first floppy disk.

IBM builds the worlds first floppy disk. 1967: IBM introduces the worlds first 8" floppy disk.

IBM introduces the worlds first 8" floppy disk. 1973: IBM introduces the IBM 3340 hard disk unit, known as the Winchester.

IBM introduces the IBM 3340 hard disk unit, known as the Winchester. 1975: September - IBM's Entry Level Systems unit unveils "Project Mercury", the IBM 5100 Portable Computer.

- IBM's Entry Level Systems unit unveils "Project Mercury", the IBM 5100 Portable Computer. 1981: September - IBM ships the IBM 5150 PC Personal Computer.

1982: April - Eight months after the introduction of the IBM PC, 50,000 units have been sold.

- Eight months after the introduction of the IBM PC, 50,000 units have been sold. 1982: May - Microsoft releases MS-DOS 1.1 to IBM, for the IBM PC.

- Microsoft releases MS-DOS 1.1 to IBM, for the IBM PC. 1982: June - The first IBM PC clone, the MPC, is released by Columbia Data Products.

- The first IBM PC clone, the MPC, is released by Columbia Data Products. 1982: August - After one year of production, IBM ships the 200,000th IBM PC.

1982: November - Compaq Computer introduces the Compaq Portable PC, the first 100% IBM compatible. It cost Compaq US$1 million to create an IBM-compatible ROM BIOS that did not violate IBM's copyright.

- Compaq Computer introduces the Compaq Portable PC, the first 100% IBM compatible. It cost Compaq US$1 million to create an IBM-compatible ROM BIOS that did not violate IBM's copyright. 1982: At the West Coast Computer Faire, Davong Systems introduces its 5MB Winchester Disk Drive for the IBM PC, for US$2000.

At the West Coast Computer Faire, Davong Systems introduces its 5MB Winchester Disk Drive for the IBM PC, for US$2000. 1983: March - IBM announces the IBM PC XT, with a 10 MB hard drive, 128KB RAM and a 360KB floppy drive. It costs US$5000.

- IBM announces the IBM PC XT, with a 10 MB hard drive, 128KB RAM and a 360KB floppy drive. It costs US$5000. 1983: November - IBM announces the IBM PCjr. It is US$700 for the bare configuration.

- IBM announces the IBM PCjr. It is US$700 for the bare configuration. 1984: February - IBM introduces the IBM Portable PC.

- IBM introduces the IBM Portable PC. 1984: March - IBM ships the IBM PCjr. It uses the 8088 CPU, 64KB RAM, and one 5.25-inch disk drive, but no monitor. It costs US$1300.

- IBM ships the IBM PCjr. It uses the 8088 CPU, 64KB RAM, and one 5.25-inch disk drive, but no monitor. It costs US$1300. 1984: August - IBM announces the PC AT, for US$4000-6700.

- IBM announces the PC AT, for US$4000-6700. 1985: April - IBM abandons production of the IBM PCjr.

- IBM abandons production of the IBM PCjr. 1986: April - IBM announces the IBM PC Convertible, 80C88-based, 256K RAM, and two 720K floppy disks, for US$2000.

- IBM announces the IBM PC Convertible, 80C88-based, 256K RAM, and two 720K floppy disks, for US$2000. 1986: April - IBM discontinues the IBM Portable PC.

- IBM discontinues the IBM Portable PC. 1986: September - IBM announces the IBM PC-XT Model 286, with 640KB RAM, 1.2MB floppy drive, 20MB hard drive, serial/parallel ports, and keyboard for US$4000.

- IBM announces the IBM PC-XT Model 286, with 640KB RAM, 1.2MB floppy drive, 20MB hard drive, serial/parallel ports, and keyboard for US$4000. 1987: IBM discontinues the IBM PC (model 5150) line. Source: Chronology of Events in the History of Microcomputers



