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29 Cards in this Set
- Front
- Back
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CPU
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brain of the computer; reads instructions and data from main memory, and writes data memory
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processing hardware
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includes the cpu and main memory
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hardware
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input, processing, output, storage
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output devices
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videa displays, printers
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storage
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magnetic and optical disks
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bit or binary digit
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value of zero or one; used for computer data b/c they are easy to represent physically
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special function card
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added to computer to augment the computer's basic capabilities
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byte
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8-bit groups
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kilobyte (k)
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collection of 1024 bytes
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megabyte (mb)
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1024K bytes
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gigabyte (gb)
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1024MB bytes
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terabyte (TB)
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1024GB
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moore's law
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thenumber of transistors per square inch on an intergrated chip doubles every 18 months; keep in mind systems will increase in importance throughout career
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volitile memory
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data that will b e lost when the computer or device is not powered
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nonvolatile memory
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memory that preserves data contents even when not powered. with such devices you can turn the computer off and back on and the contents will be unchanges eg. magnetic
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operating system
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manage all computer applications
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10/100/1000 ethernet
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allow for tranmission at a rate of 10,100,or 1000 megabits per second
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WAN
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connect through telephone lines, internet connects through WAN, connect through a larger area,
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ISP
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provides you with a legitimate internet address, received communications from the internet and passes them to you, pays for internet
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dial-up
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signal carried through phone lines
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dsl
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operate so signals do not conflict with telephone, high speed,
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cable
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comes through cable lines...has box
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router
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box...takes in cable/phone line
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mac address
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serial number of ethernet card
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ip address
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id number for specific computer accessing the internet
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icann
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licences other organizations to register domain names.
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domain name system
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converts user-friendly into IP addresses
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systems developement
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process of creating and maintaining information systems
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major phases of systems development
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system definition, requirement analysis, component design, implementation, and system maintenane
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