LOGIC AND CIRCUIT CONSIDERATIONS IN THE DESIGN OF A DIGITAL DIFFERENTIAL ANALYZER TO BE USED AS A TEST TOOL FOR EVALUATION OF ADVANCED MEMORY DEVICES
ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL GUIDANCE AND CONTROL DIRECTORATE
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The technical design and problems encountered in the building of a Digital Differential Analyzer DDA, a test tool for evaluation of advanced memory devices, digital to analog and analog to digital converters are presented. The first step in building the test tool was to select a particular guidance scheme to mechanize. The Pershing Missile Guidance was instrumented for this purpose. In order to simplify the building of the DDA commercial digital modules were used as the basic components. The logical design, construction and testing of all the circuits were completed, and all units operated satisfactorily. In order to make accuracy tests with actual acceleration profiles it was necessary to construct a device to serve as a buffer between the DDA and a general purpose digital machine which would provide the proper input data.
- Computer Hardware