Written on October 21, 2009 at 2:13 pm by Admin
Filed under Computer History
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| Model name |
Model |
Introduced |
CPU |
Features |
| PC |
5150 |
August 1981 |
8088 |
Floppy disk or cassette system |
| XT |
5160 |
March 1983 |
8088 |
First IBM PC to come with an internal hard drive as standard. |
| XT/370 |
5160/588 |
October 1983 |
8088 |
5160 with XT/370 Option Kit and 3278/79 Emulation Adapter |
| 3270 PC |
5271 |
October 1983 |
8088 |
With 3270 terminal emulation |
| PCjr |
4860 |
November 1983 |
8088 |
Floppy-based home computer |
| PC Portable |
5155 |
February 1984 |
8088 |
Floppy-based portable |
| AT |
5170 |
August 1984 |
80286 |
Medium-speed hard disk |
| AT/370 |
5170/599 |
October 1984 |
80286 |
5170 with AT/370 Option Kit and 3278/79 Emulation Adapter |
| 3270 AT |
5281 |
? |
80286 |
With 3270 terminal emulation |
| Convertible |
5140 |
April 1986 |
8088 |
Microfloppy laptop portable |
| XT 286 |
5162 |
September 1986 |
80286 |
Slow hard disk, but zero wait state memory on the motherboard. This 6 MHz machine was actually faster than the 8 MHz ATs (when using planar memory) because of the zero wait states |
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