Computer Maintenance & Peripherals. Introduction the word "Computer" comes from the word "Compute". Compute means to calculate, so computer consider being a calculative device, but nowadays uses of computer in more than 80% of different areas that are not related to arithmetic calculations. So, computer is not merely calculative device. A computer is an electronic device that manipulating data according to a list of instructions. Computers take numerous physical forms. Early electronic computers were the size of a large room, consuming as much power as several hundred modern personal...