# LGP-30 Simulator Configuration

The LGP-30 was a small scientific and business computer. Introduced in 1956, it used vacuum tube and diode logic and featured 4096 words of drum based memory, and a Friden Flexowriter for input and output. (There was also an optional high-speed paper-tape reader and punch.) The later LGP-21 used transistor logic and a disk memory but was about three times slower.

Photographs :

- LGP-30
- LGP-21 (courtesy of Tom Jennings)

Option | Description | Capacity
CPU and memory | LGP-30 | 4KW
| LGP-21 | 4KW
Console | Friden Flexowriter |
Paper tape | High speed reader |
| High speed punch |

Updated 30-Jan-2007 by Bob Supnik (simh AT trailing-edge DOT com - anti-spam encoded)