A MAGNETIC REVERSIBLE COUNTER WITH DIGITAL TO ANALOG CONVERSION
Abstract
A time-shared, two-channel magnetic counter and digital-to-analog converter is described. The counter is capable of performing unit addition and subtraction. The design objective - to reduce the number of components - was well satisfied by the use of all-magnetic shift registers as the storage elements. Only two components are required for magnetic storage, whereas ten components were required for transistor flip flop storage. The logic operati formed by time-shared diode gate circuits. The calculated worst-case error for the digital-to analog conversion is or - 0.3%. The measured error is less than or - 0.25%. This error is due to variations in the bulk resistivity of diodes and PNPN switches, and it can be reduced, theoretically, to less than or - 0. 1%.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1963
- Accession Number
- AD0403867
Entities
People
- Larry M. Cohen
Organizations
- Lockheed Martin Missiles and Space