Identify the four basic categories of hardware in a microcomputer system. system unit, modem, ram, and microprocessor system uni
t, input/output, secondary storage, and primary storage hard disk, input/output, secondary storage, and display devices system unit, input/output, secondary storage, and communication
backdoor (also called a trapdoor) is a programming routine built into a system by its designer or programmer. It enables the designer or programmer to bypass system security and sneak back into the system later to access programs or files.
