Accession Number : AD0284083

Title :   DIGITAL DIFFERENTIAL ANALYZERS

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : SHILEYKO,A.V.

Report Date : 04 SEP 1962

Pagination or Media Count : 1

Abstract : Digital differential analyzers are a new type of analog computer, distinguished by increased potential accuracy over other analog machines. Most recent models of DDA have integrator registers containing 6 to 8 decimal digits, which makes it possible to obtain solutions with 5 to 6 true decimal places. This is 2 to 3 orders of magnitude greater than the accuracy of other types of analog machines. The solution of the problem of the speed of operation of DDA requires a specific approach. As noted, as a result of each individual iteration, the value of any variable represented by delta modulation of a pulse voltage, including the variable used as the solution of the problem, can vary only by the magnitude of an elemental increment. (Author)

Descriptors :   *ANALOG COMPUTERS, *DIGITAL SYSTEMS, *PULSE HEIGHT ANALYZERS, MEMORY DEVICES, DATA STORAGE SYSTEMS, DIGITAL COMPUTERS, MODULATION, SEQUENCES(MATHEMATICS)

Distribution Statement : APPROVED FOR PUBLIC RELEASE