Talk:Z3 computer
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Info wanted on Z1, Z2, Z4, and Z5
What about the other computers Z1, Z2 and Z4 and Z5? --HJH
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Z3 and computer criteria; Turing
[Also,] I've weakened the claim about "criteria for a computer", since several definitions of "computer" are in wide use. However, does anyone know if the Z3 was Turing-complete, and whether it was [one of] the first to achieve this classification, as I feel that would be worth mentioning. -- IMSoP 23:36, 8 Dec 2003 (UTC)
- It was proven to be Turing complete in 1998. It is capable of doing any computation that can be done by a Turing machine on a finite tape. It's just terribly inefficient at it since it has no branch instruction and has to simulate it arithmetically with large amounts of program tape, but that's irrelevant to the question. Andreas B. 00:11, Dec 9, 2003 (UTC)
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No. of relays in Z3 implementation
According to the TU-Berlin Z3 web page, the machine had 600 relays in its FPU plus 1600 in its "constant & variable memory" (actually, 1408 for the 64 words of 22 bits, and some read/write access logic I guess, making the total roughly 1600 gates). Hence, I get 600 + 1600 = 2200. --Wernher 23:26, 20 Oct 2004 (UTC)
