## Calculating instruments and machines |

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### Contents

INTRODUCTION | 1 |

HIGHSPEED AUTOMATIC DIGITAL MACHINES AND NUMERICAL | 9 |

THE DIFFERENTIAL ANALYSER AND PARTIAL DIFFERENTIAL | 26 |

Copyright | |

4 other sections not shown

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### Common terms and phrases

adder adding unit addition analytical engine approximation arithmetical operations Babbage Babbage's binary boundary conditions calculating machine capacity cards carried characteristics circuits coded coefficients computing control system convenient counter curve decimal digits delay line developed differential analyser dynamic storage electrical electronic elements Eniac equation of heat equipment evaluated example finite difference form of storage formula function given Hartree Harvard Mark heat conduction independent variable input tables instrument integrand integraph integration interconnections interpolation interval involved isograph iterative method iterative process large number linear Mark I Calculator means mechanical minor cycle multiplication obtained operating instructions ordinary differential equations output partial differential equation potential dividers problem pulse punched punched tapes quantities relays repetition replaced representation of numbers represented rotation satisfy sequence of operations serial set of equations set-up shaft signal single specified successive switches temperature tion transfer trial solutions tubes University of Cambridge values velocity voltage