# IBM 1620 Simulator Configuration

The IBM 1620 was introduced in 1960 as a small-scale scientific computer. For many people, the 1620 was the first computer they ever used.

Photographs (courtesy of the Technology Museum of Thessaloniki):

- IBM 1620 Model 2

Option | Description | Capacity
CPU and memory | IBM 1620, Model 1 or Model 2 | 20K - 60K digits
CPU special features | indirect addressing |
| edit instructions |
| automatic divide |
| modify address |
| Model 2 CPU features |
| indexing |
| binary capability |
| floating point |
Console | integrated typewritter |
Paper tape | 1621 paper tape reader |
| 1624 paper tape punch |
Cards | 1622 card reader/punch |
Line printer | 1443 line printer |
Disk | 1311 disk pack, 4 drives | 2M characters

Updated 21-Apr-2003 by Bob Supnik (bob AT supnik DOT org - anti-spam encoded)