## Computing Before ComputersSurveys the concepts, technology, purpose, and impact of computing devices before the electronic digital computer was developed after World War II. Includes devices from ancient cultures, the middle ages, the early industrial period, and the technology that led directly to the modern computer. Annotation(c) 2003 Book News, Inc., Portland, OR (booknews.com) |

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#### LibraryThing Review

User Review - jaygheiser - LibraryThingA series of essays, with photos, of mechanical and pre-digital computation devices. Includes one chapter on subject of punched card machines. Read full review

### Contents

Difference and Analytical Engines | 59 |

Logic Machines | 99 |

PunchedCard Machinery | 122 |

Copyright | |

4 other sections not shown

### Common terms and phrases

abacus accounting machine addition Aiken analog computers analog devices Analytical Engine applications arithmetic operations astronomical Atanasoff axis Babbage Babbage's basic became Bell Labs binary built calculating machine census Colossus commercial completed construction decimal developed Difference Engine Differential Analyzer differential equation digital computer drum early Eckert electronic calculating electronic computers ENIAC equipment example figure wheel function gear gunnery computers History of Computing Hollerith Howard Aiken idea input instruments integrating wheel invention Kelvin's Konrad Zuse later Leibniz logarithms logic machines machinery MADDIDA manufactured mathematical Mauchly mechanical calculating method multiplication and division Napier's bones output paper tape performed planimeter position PQRs PQrs PQrs printing problems produced programming punched cards punched-card machines relay calculators reliable represented result rotated Schickard Schreyer scientific sequence shaft shown in Figure simple slide rule solve sorter speed Stibitz subtraction switching tabular value units vacuum tube vertical Zuse