November 2022
Intermediate to advanced
460 pages
14h 58m
English
Content preview from Analog Computing, 2nd Edition
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10 Digital differential analysers
The essence of an analog computer is that it forms an analog of the problem to be solved. Although most analog computers are based on analog electronic implementations of their respective computing elements working in continous time and using continuous voltages or currents to represent values, there is no need to restrict analog computers to this particular type of implementation.
A digital differential analyser (DDA) is basically an analog computer but one working in discrete time with values represented as serial or parallel bitstreams.1 The earliest developments of DDAs date back to the late 1940s when Northrop started the development of a cruise-missile like system.2
Representing values as bit sequences ...
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