Original: In computing , a process is an instance of a computer program , consisting of one or more threads , that is being sequentially executedKnott 1974 , p. 8 by a computer system that has the ability to run several computer programs concurrently .
Simplified: In computing , a process is an instance of a computer program that is being sequentially executedKnott 1974 , p. 8 by a computer system that has the ability to run several computer programs concurrently .