DEC's PDP-8, introduced in 1965, was the first mass produced minicomputer, as well as the first computer costing less than $20,000. It remained in active production until 1988; more than 50,000 units were produced. All the models in the family were based on one of the seven CPU designs (photographs courtesy of Digital Equipment Corporation):
| Option | Description | Capacity |
| CPU and memory | PDP-8/E | 4KW - 32KW |
| CPU options | KM8E memory extension and timeshare control | |
| KE8E EAE (extended arithmetic element) | ||
| TSC8-75 timesharing controller for ETOS | ||
| FPP-8A floating point processor | ||
| Console | KL8E and KSR-33 Teletype | |
| Extra terminals | KL8JA and KSR-33 Teletype | 4 terminals |
| Paper tape | PC8E paper tape reader and punch | |
| Real time clock | KW8E real time clock | |
| Line printer | LP8E line printer | |
| DECtape | TC08/TU56 DECtape | 190KW |
| TD8E/TU56 DECtape | 190KW | |
| Disk | RX8E/RX01 single density floppy disk | 256KB |
| RX28/RX02 double density floppy disk | 512KB | |
| DF32/DS32 fixed head disk | 128KW | |
| RF08/RS08 fixed head disk | 1MW | |
| RK8E/RK05 cartridge disk | 1.6MW | |
| RL8A/RL01-RL02 cartridge disk | 5-10MB | |
| Cassette tape | TA8E/TU60 cassette tape | 93KB |
| Magnetic tape | TM8E/TU10, 800bpi 9 track magnetic tape |
Updated 08-Aug-2020 by Bob Supnik (simh AT groups DOT io - anti-spam encoded)
