![]() ![]() 1986: April - IBM discontinues the IBM Portable PC.1986: April - IBM announces the IBM PC Convertible, 80C88-based, 256K RAM, and two 720K floppy disks, for US$2000.1985: April - IBM abandons production of the IBM PCjr.It uses the 8088 CPU, 64KB RAM, and one 5.25-inch disk drive, but no monitor. 1984: February - IBM introduces the IBM Portable PC.1983: November - IBM announces the IBM PCjr.1983: March - IBM announces the IBM PC XT, with a 10 MB hard drive,ġ28KB RAM and a 360KB floppy drive.1982: At the West Coast Computer Faire, Davong Systems introduces its 5MB Winchester Disk Drive.It cost Compaq US$1 million to create an IBM-compatible ROM BIOS that did not 1982: November - Compaq Computer introduces theĬompaq Portable PC, the first 100% IBM compatible.1982: August - After one year of production, IBM ships the 200,000th IBM PC.1982: June - The first IBM PC clone, the MPC, is released by Columbia Data Products.1982: May - Microsoft releases MS-DOS 1.1 to IBM, for the IBM PC.1982: April - Eight months after the introduction of the IBM PC, 50,000 units have been sold.1981: September - IBM ships the IBM 5150 PC Personal Computer.1975: September - IBM's Entry Level Systems unit unveils "Project Mercury",.1973: IBM introduces the IBM 3340 hard disk unit, known as the Winchester.1967: IBM introduces the worlds first 8" floppy disk.1967: IBM builds the worlds first floppy disk. ![]() QUE: Upgrading & Repairing PCs Eighth Edition.Released in 1975 - It was revolutionary, and extremely expensive. This wasn't IBM's first portable computer, that would be the IBM 5100, The Compaq was advertised as being 100% IBM compatible, and even weighs slightly less. Released one year prior, costs $700 less, but has the same CPU and runs just as fast. The 5155 was IBM's response to the Compaq Portable computer, which was There are no batteries, you still have to plug it into the 110VAC outlet. It's considered portable, but only because of the built-in monitor and drives. The floppyĭrives take-up a lot of room, so most of the slots cannot accept full-length cards: System installed in a carry-around case with a built-in monitor and floppy drives.īecause of this, the eight internal expansion slots aren't quite as useful as they could be. The Portable is not really a new, redesigned IBM computer, it's actually just the same motherboard as the IBM XT (model 5160) desktop The system has identical function and performance characteristics to an equivalently configured IBM Personal Computer. The system board is the same as that of the IBM PersonalĬomputer XT with 256Kb of memory that is expandable to 512Kb using the memory expansion option.įive expansion slots are available for the connection of most IBM Personal Computer options. The unit also has a new, lightweight keyboard and a universal power supply. One 5 1/4-inch double sided diskette drive (with space for an optional second drive), and two IBM Personal Computer attachment options (diskette adapter and The IBM Portable Personal Computer 5155 Model 68 consists of a lightweight case with a carrying handle containing a built-in. Excerpt from the original IBM announcement: ![]()
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