IBM Personal Computer 5150
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The IBM Personal Computer model 5150, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform. 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.
Specification
All models featured:
- Intel 8088 CPU at 4.77MHz
- Socket for Intel 8087 Math Coprocessor
- IBM Personal Computer System Board with 5 ISA slots
- 63W PSU
- Parallel and serial ports
- Cassette deck port
- ROM BASIC and free ROM socket for custom ROM
- Substantial case with two full-hieght 5¼" drive bays
A choice of either Colour Graphics or Monochrome display adapters were available, the former with a composite output for connection to an ordinary TV.
The vast majority of models shipped had at least one floppy drive, for which IBM used three models:
Models
The 5150 was produced from 12th August 1981 to 1st April 1987 in a number of configurations:
| Model Number | 83-key Keyboard | RAM | 5¼" Floppy Drives | Motherboard |
|---|---|---|---|---|
| 1 | Y | 16KB | None | 16/64KB |
| 14 | Y | 64KB | 1x160KB | 16/64KB |
| 64 | Y | 64KB | 1x360KB | 16/64KB |
| 74 | Y | 64KB | 2x360KB | 16/64KB |
| 104 | Y | 64KB | None | 64/256KB |
| 114 | Y | 64KB | 1x160KB | 64/256KB |
| 164 | Y | 64KB | 1x360KB | 64/256KB |
| 166 | Y | 256KB | 1x360KB | 64/256KB |
| 174 | Y | 64KB | 2x360KB | 64/256KB |
| 176 | Y | 256KB | 2x360KB | 64/256KB |
| 813 | Y | 48KB | 1x160KB | 16/64KB |
| 824 | Y | 64KB | 2x160KB | 16/64KB |
| X14 | N | 64KB | 1x360KB | 64/256KB |
| X64 | N | 64KB | 1x360KB | 64/256KB |
| X74 | N | 64KB | 2x360KB | 64/256KB |
| X66 | N | 256KB | 1x360KB | 64/256KB |
| X76 | N | 256KB | 2x360KB | 64/256KB |
Reference Materials
- IBM 5150 Guide to Operations (Aug-81)
- IBM 5150 Guide to Operations (Apr-84)
- IBM 5150 Hardware Maintenance and Service
- IBM 5150 Technical Reference (Aug-81)
- IBM 5150 Technical Reference (Apr-84)