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Z1 computer
Konrad Zuse invented the Z1, the first of 4 computers that he would go on to invent, was the first binary elctricically drien calculator reading instructions from a punch tape. -
Z2 computer
The Z2 had the same mechanical memory as the Z1, but replaced the arithmatic and control logic with electrical relay circuts. -
Z3 computer
This was the world's first working programable, fully automatic digital computer. Buit with 2,000 relays, a 22-bit world length that operated at a clock frequecy of 5-10 Hz -
Z4 computer
This was Conrad Zuse's final computer, the most technologically advanced one that he had. Approximately 1000 floating point arithmetic operations on average an hour, average calculation was 400ms for addition, 3 sec for multiplication, etc. -
IBM1620
One of the next to be built in the line of computers. It was first marketed as an inexpensive scientific computer. Was produced from 1959 to 1970, around 2,000 were produced
