September 25, 1996
Software runs on, and controls, the microprocessor. The microprocessor controls the rest of the computer; it executes programs (software). Software is to hardware as the mind is to the body. The microprocessor can be likened to the ``heart'' of the computer.
Laser printers are faster, more costly, much quieter, and produce higher quality output than dot-matrix printers.
The operating system is a layer of software between applications and the hardware. It provides various services to application programs, such as a filesystem for storing application datea.
16 + 4 + 1 = 21
ASCII. It's needed because the computer only understand binary numbers. Therefore, characters must be represented by a binary code.
Pipelining is an assembly-line technique used to by some microprocessors to execute instructions more quickly. It enhances performance by enabling the microprocessor to execute programs more quickly.