Z2 (computer)
| File:Zuse archive Z2.jpg Drawing of the Zuse Z2 | |
| Developer | Konrad Zuse |
|---|---|
| Type | Electromechanical (mechanical and relay-based) digital computer |
| Release date | 1940 |
| CPU | 600 electrical relay circuits @ ca. 5 Hz |
| Memory | 64 words |
| Removable storage | Punch cards |
| Power | 1000 watts |
| Weight | 300 kg (660 lb) |
| Predecessor | Z1 |
| Successor | Z3 |
The Z2 was an electromechanical (mechanical and relay-based) digital computer that was completed by Konrad Zuse in 1940.[1][2][3] It was an improvement on the Z1 Zuse had built in his parents' home, which used the same mechanical memory. In the Z2, he replaced the arithmetic and control logic with 600 electrical relay circuits, weighing over 600 pounds.
The Z2 could read 64 words from punch cards. Photographs and plans for the Z2 were destroyed by the Allied bombing during World War II.[4] In contrast to the Z1, the Z2 used 16-bit fixed-point arithmetic instead of 22-bit floating point.
Zuse presented the Z2 in 1940 to members of the DVL[1][2][3] (today DLR) and member Alfred Teichmann, whose support helped fund the successor model Z3.[5]
Specifications
[edit | edit source]- Frequency
- c. 5 Hz
- Arithmetic unit
- Fixed point arithmetic unit with 16 bit word length
- Average calculation time
- 0.8 sec for addition operation
- Number of relays
- 600
- Memory
- 64 words (same as Z1)
- Power consumption
- 1000 watts
- Weight
- 300 kg (660 lb)[6]
See also
[edit | edit source]References
[edit | edit source]- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).(NB. Z1 and Z2.)
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). (NB. Also search the book for Luftfahrt - further part.)
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). [1] (xii+679 pages)
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
Further reading
[edit | edit source]- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
External links
[edit | edit source]- Z2 via Horst Zuse (son) web page
Lua error in Module:Authority_control at line 153: attempt to index field 'wikibase' (a nil value).
