Z2

Konrad Zuse had bad luck with his original Z1. The Z1 did contain all components of a modern day computer, however, the Z1 was not reliable. Its mechanical construction was too complex and error prone. Therefore, Konrad Zuse decided to construct the Z2. He wanted to find out whether the use of relays yielded better results.

A Numeric unit (no picture available) with 600 relays did work well. The Z2 was complete in 1939.

The airthmetic unit consisted of a word length of 16 bit and fixed point arithmetic was used.

Konrad Zuse now decided to build the Z3, a computer completely built with relays. It later became to be known as the first fully functional programmable computer.

Links

Z1 (German)

Goto the Z3...

Name of Machine

Z2 (1939)

Implementation

Relays and the mechanical memory of the Z1.

Frequency

Ca. 5 Hertz

Arithmetic Unit

Fixed point arithmetic unit with a word length of 16 bit.

Average calculation Speed

0.8 sec for an addition

Input

Defimal numbers.

Output

Decimal numbers.

Word Length

16 bits.

Elements

Ca. 200 relays.

Memory

Memory of the Z1 (64 words).

Power Consumption

1000 Watt

Ca. 300 kg

Area of Application

Prototyp for the relay technique.

Sold

No

Costs

Unknown.

Links

Zuse-Computer (English)

Zuse-Computer (German)

Konrad Zuses Work on a DVD

Comments

Test for the reliability of the relay technique.

Zuse-Apparatebau |

Zuse 1936-1949 |

Zuse KG (1949-1964) |

Zuse KG - Computer |

Z1 |

Z1- Metal Sheets |

Z2 |

Z3 |

Z4 |

S1 |

Z5 |

Z11 |

Z22 |

Z23 |

Z31 |

Z64 |

Z25 |