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A Microphotometer Digital Readout System

Volume 26, Number 2 (April 1972) Page 306-308

Mason, Robert E.


Some of the advantages of an all-electronic digital readout system for microphotometry are high precision, reliability, speed, and ease of operation. Such a system is feasible if the scanning digital display can be automatically stopped at the point of minimum transmittance. One way to accomplish this is by means of a minimum-voltage memory circuit. The design and construction of such a circuit is described.