This document discusses the key features of computers, including processing power, storage, display, operating system, network connectivity, and power. It describes how processing power is determined by the motherboard, processing memory and graphics processing unit. It also explains that computer storage includes the hard drive and removable drives like CDs and USB sticks, and that the display size and resolution can vary between devices. The document outlines how operating systems offer different software compatibility and interfaces, and that most computers have built-in wireless or wired network connectivity options. Finally, it notes that laptop battery life depends on the number of cell packs while desktops require a constant power source.