High Quality Content by WIKIPEDIA articles! Digital Process Communications protocols originated with the first smart transmitters for process measurement made by Honeywell in the 1980s. Since then other process instrument manufacturers have produced smart transmitters. Smart communication protocols have evolved into various standardised types. The HART protocol and DE protocol are two such process communication digital protocols. Honeywell (NYSE: HON) (legally Honeywell International Inc.) is a major conglomerate company that produces a variety of consumer products, engineering services, and aerospace systems for a wide variety of customers, from private consumers to major corporations and governments.

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