DIGITAL DIFFERENTIAL ANALYZERS

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)

Document Details

Document Type
Technical Report
Publication Date
Sep 04, 1962
Accession Number
AD0284083

Entities

People

  • A.v. Shileyko

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Amplitude Modulation
  • Analog Computers
  • Analyzers
  • Computers
  • Computing Devices
  • Delta Modulation
  • Differential Analyzers
  • Integrators
  • Iterations
  • Modulation

Readers

  • Computer Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Theoretical Analysis.