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Title: Interfacing Data Acquisition To The Digital Computer
Author: Henry Gilmore
Source: American Gas Association 1972
Year Published: 1972
Abstract: Over the years, state-of-the-art hardware to implement a remote digital data acquisition and supervisory control system for the pipeline industry has progressed through stepping switches, telephone type relays, reed relays, vacuum tubes, discreet solid stale components and integrated circuits. The digital computer, as a direct operating aid, entered the scene not much over 10 years ago. In the earlier version, the computer monitored the hardwired master station. It performed some calculations and was often little more than a sophisticated data logging system.

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