Digital Differential Analyzer
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High Quality Content by WIKIPEDIA articles! A Digital Differential Analyzer (DDA), also sometimes called a Digital Integrating Computer, is a digital implementation of a Differential Analyzer. The integrators in a DDA are implemented as accumulators, with the numeric result converted back to a pulse rate by the overflow of the accumulator. The primary advantages of a DDA over the conventional analog Differential Analyzer are greater precision of the results and the lack of drift/noise/slip/lash in the calculations. The precision is only limited by register size and the resulting accumulated…mehr

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High Quality Content by WIKIPEDIA articles! A Digital Differential Analyzer (DDA), also sometimes called a Digital Integrating Computer, is a digital implementation of a Differential Analyzer. The integrators in a DDA are implemented as accumulators, with the numeric result converted back to a pulse rate by the overflow of the accumulator. The primary advantages of a DDA over the conventional analog Differential Analyzer are greater precision of the results and the lack of drift/noise/slip/lash in the calculations. The precision is only limited by register size and the resulting accumulated rounding/truncation errors of repeated addition. Digital electronics inherently lacks the temperature sensitive drift and noise level issues of analog electronics and the slippage and "lash" issues of mechanical analog systems.