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a collection of hardware, software, data, people, and procedures that work together to produce quality information
consists of users, analyst, IT professionals who work on the system development project
in large organizations users right a formal request for a new or modified information system
the user stops using the old system and begins using the new system on a certain date
consists of running the old system alongside the new system for a specified time
machine cycle fetch decode execute store
_________ is for every instruction, a processor repeats a set of four basic operations, which comprise a machine cycle _____, _____, ____, and _____
allows the various devices both inside and attached to the system unit to communicate with each other; path bits take on motherboard
electronic components that store instructions waiting to be executed and data needed by those instructions
a series of related instructions, organized for a common purpose, that tells the computer what tasks to perform and how to perform them
consists of programs designed to make users more productive and/or assist them with personal tasks
a set of programs that coordinates all the activities among computer hardware devices
allows a user to perform maintenance-type tasks usually related to managing a computer, its devices, or its programs
partial room to a full room of equipment. large expensive powerful computer that can handle hundreds or thousands of connected users simultaneously
miniature; special purpose computer that functions as a component in a larger product
internet world wide web
the _______ is a worldwide collection of networks that links millions of businesses, govt agencies, educational institutions, and individuals; _____ is a widely used service on the internet, consists of a worldwide collection of electronic documents
RAM ROM cache
____ main memory; ___ memory chips store permanent data and instructions; ______ stores frequently used data and instructions
when the computer's power is turned off, ________ memory loses its content; while _______ does not.
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