Photograph of a diagram entitled "Figure 7. Block diagram of the counting circuit in the Z3 machine". Diagram shows the counting circuit in either the Zuse Z3 or Zuse Z4 computer. Konrad Zuse built the Z3, in Germany in 1941. The Z4 was built in 1944. Zuse rebuilt the Z3 between 1960 and 1961. This diagram is probably related to the 1960s model.

This is one of a set of photographs showing computers, computer components, computer structure diagrams and computer programmimg instructions, probably used as aids in teaching computing subjects. The diagrams and instructions relate to several pioneer models and systems of stored program computers dating back as far as the 1950s and including CSIRAC (originally known as CSIR Mark 1), Cirrus, Atlas, IBM System/360 , CDC 6600 System, and Illiac IV.

Description of Content

Block diagram showing the counting circuit of the Zuse Z3 computer.

Physical Description

Black and white photographic print of a computer programming diagram.

More Information