Photodiodes for 12 hole paper tape reader of the CSIRAC computer.

A photodiode is a detector that converts light into either current or voltage.

In a paper tape reader, light is transmitted through the holes punched into the paper tape. The light is then detected by photodiodes, which produce electrical signals that are processed by the computer.

Physical Description

List of Parts: 3 PARTS. A fourth part was located Dec 2005.

More Information