COMMERCE 2KA3 Chapter Notes - Chapter 12: Minicomputer, Word Processor, Uninstaller
30 Sep 2011
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Introduction: hardware: consists of the physical devices associated with a computer system, software: the set of instructions that the hardware executes to carry out specific tasks. Central processing unit (cpu: central processing unit (cpu): the actual hardware that interprets and executes the program (software) instructions and coordinates how all the other hardware devices work together. Most popular magnetic medium: optical medium: a secondary storage medium for computers on which information is stored at extremely high density in the form of tiny pits, optical medium types include: Compact disk-read-only memory (cd-rom) : reads cds and writes on them. Compact disk-read-write (cd-rw) drive: has the ability to rewrite data repeatedly. Digital video disk-read-only memory (dvd-rom) : reads dvds. Digital video disk-read-write (dvd-rw): same thing as cd-rw for dvds. Output devices: output device: equipment used to see, hear, or otherwise accept the results of information processing requests, output devices are responsible for converting computer-stored information into a form that can be understood.
