When computers entered the world of process control, they were large monolithic machines. Since they were, after all, computers, many companies took the stance that the machines belonged to, and would..
When computers entered the world of process control, they were large monolithic machines. Since they were, after all, computers, many companies took the stance that the machines belonged to, and would be supported by, the local electronic data processing (EDP) group ? the local IT group today ? especially since the machines were often IBM 1800s. Often the control engineers were also placed under the EDP/IT group.
Control systems evolved; first to distributed systems with a monolithic computer at the center (the Honeywell TDC-2000/ Honeywell 4500 combination, for example) and later to distributed systems where the computing capacity was also distributed (the Honeywell TDC-3000 with AMs,
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