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Key Terms Chp2
Computer number system
10
Computer Science
Undergraduate 1
06/05/2007

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Term
ASCII (American Standard Code of Information Interface)
Definition
-industry standard 8-bit characters used to define English text characters
-96 upper/lower case letters
-32 non printing characters
-numbers turned into text
Term
Binary Number Systems
Definition
-base 2
- two values: 1 or 0
- represent on and off
- use to process information
Term
Byte
Definition
-eight bites(b)
Term
Decimal Number System
Definition
-base of 10
-most common number system used by humans
Term
Haxadecimal Number System
Definition
-16 base
-0-9 then A-F
-used in computers to make binary easier
Term
Nibble
Definition
collection of two bites(b)
Term
Crumb
Definition
collection of two bites(b)
Term
Subscript
Definition
-in mathematical notation are the small numbers that appear at the bottom right of a number
-denotes that number system being represented
Term
(SI) Systeme International D'unities
Definition
-scientic method expressing the magnitudes or quanties of seven important phenomena
- formally called meterkilogram- second (MKS)
-defined by prefix multipliers in powers of 10 from -24 to 24
Term
Unicode
Definition
system that incorporated international character symbolsand combines and simplifies other separate code systems for glyphs or characters (website designs)
-lasted version 32-bit code
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