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):

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 08-Aug-2020 by Bob Supnik (simh AT groups DOT io - anti-spam encoded)