A(n) computer network is a collection of computers and other hardware devices connected together so that network users can share hardware, software, and data, as well as communicate with each other electronically.

Johnson enterprises uses a computer to handle its sales invoices. lately, business has been so good that it takes an extra 3 hours per night, plus every third saturday, to keep up with the volume of sales invoices. management is considering updating its computer with a faster model that would eliminate all of the overtime processing.