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HighSpeed Automatic Digital Machines and Numerical
The Differential Analyser and Partial Differential
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adder adding unit addition analytical engine approximation arithmetical operations automatic Babbage Babbage's binary boundary conditions calculating machine capacity cards carried characteristics circuits coded coefficients computing control system counter curve decimal digits delay line developed differential analyser digital machine 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 pulse punched punched tapes quantities relays representation of numbers represented rotation sequence control sequence of operations serial set of equations set-up shaft signal single specified successive switches tape temperature tion transfer trial solutions tubes University of Cambridge values voltage