Information Systems for Business and Beyond (2019)

Prefix Represents


one thousand

kilobyte=one thousand bytes


mega one million megabyte = one million bytes giga one billion gigabyte = one billion bytes tera one trillion terabyte = one trillion bytes

one quadrillion one quintillion one sextillion one septillion

petabyte = one quadrillion bytes exabyte = one quintillion bytes zettabyte = one sextillion bytes




yottabyte = one septillion bytes Tour of a PC


All personal computers consist of the same basic components: A Central Processing Unit (CPU), memory, circuit board, storage, and input/output devices. Almost every digital device uses the same set of components, so examining the personal computer will give you insight into the structure of a variety of digital devices. Here’s a “tour” of a personal computer. Processing Data: The CPU The core of a computer is the Central Processing Unit, or CPU. It can be thought of as the “brains” of the device. The CPU carries out the commands sent to it by the software and returns results to be acted upon. Information Systems for Business and Beyond (2019) pg. 26

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