Z1

Originally named the V1, the Z1 began development in 1936 by Germany's Konrad Zuse in his parents living room and today is considered the first electrical binary programmable computer. The Z1 had 64-word memory (each word contained 22 bits) and a clock speed of 1 Hz. To program the the Z1 required that the user insert punch tape into a punch tape reader and all output was also generated through punch tape.

• See document CH000984 for additional information about when the first computer was invented.

Also see: Computer history