Interface for 15VSM-5 and Elektronika D3-28 minicomputers with digital measuring instruments
N A Udovichenko, Yu. I. Polikarpov, B.V. Makushkin · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 1987
A device is described for data input (up to 8 decimal digits in 8421 code) into 15VSM-5 and Elektronika D3-28 minicomputers from four measuring instruments: a V7-21 voltmeter and three Ch3-54 frequency counters. Data from the voltmeter are entered by software interrogation and data from the frequency counters are entered by software interrupts. The device is implemented by TTL integrated circuits.