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43 Cards in this Set

  • Front
  • Back
How are vector graphics stored
use bits to store geometric descriptions that define all shapes of an image
how are digital graphics represented
pixels-grid of small points
bit-mapped graphics-images stored by the color of each pixel
AM & FM radio
Analog
Satellite radio
digital-receives signal via satellite communication
DRM
Technology that protects intellectual property by restricting the # of devices/applications on which a file can be operated/the number of times a file can be burned/copied to a CD
Wifi
wireless networking technology that makes use of access points to wirelessly connect users to networks
VPN
uses a technique called tunnelling to securely send private data via internet
LAN
network that connects computer systems and devices w/ same location
WAN
connects LAN+MAN b/w cities, across countries, around the world using microwave and satellite transmission or telephone lines
WiMax
new generation wireless broadband that is faster/has a longer range than wifi
bluetooth
enables a wide assortment of digital devices to communicate directly with eachother wirelessly over short distances
GPS
uses satellite to pinpoint the location of objects to earth--uses 24 satellites so that you are always using atleast 4
RFID
uses tiny transponders in tags that can be attached to merchandise and read wirelessly using an RFID reader
Most international cellular carriers use this network
GSM
Cookie
small text file stored in web serves that allows the website to recognize if you've visited the site before.
Protocols
rules that allow 2/more computers to communicate over a network (HTTP, TCP/IP)
Programming Language
A primary tool for programmers, provides commands for writing software that are translated into step-by-step directions and are executed by the processor
Client
the program that makes the request
Server
the program that provides the service
Cable Modem
transfer rates as high as 8Mbps
Dial up
transfer rates as high as 56 kilobots
DSL
uses phone lines but not like dial up, transfer rates u to 5Mbps
Digitalization
process of transforming nondigital info (written/spoken words) into 1s and 0s
Productivity
helps people be productive-word processor, spreadsheet, database
Management Information System
used to store, manipulate and manage data in order to find and present useful info
Personal Info System
helps individs store useful info such as calanders and to-do lists
Operating system
set of computer programs that runs/controls hardware. Acts like a buffer b/w hardware and application software and app interface b/w application program and users
Open source software
distributed, typically for free, with a source code so it can be studied and changed by its users
Optical storage
stores bits by using an optical laser to burn pits into the surface of highly reflective disk surfaces
--CD, DVD, blue laser
Magnetic storage
uses magnetic properties of iron oxide particles to store bits/bytes more permanently
--hard disk
Solid Secondary Storage
device stores data using transistors--flash drive
Moore's law
with the advancement of technology, transistors would reduce, doubling their density on the chip every 2 years
RAM-Random access memory
temporary memory that stores bytes of data and program instruments for the processor to access
ROM-read only message
provides permanent data instructions that do not change (booting the computer)
CMOS-complimentary mental oxide semiconductor
provides semipermanent storage for system configuration info that may change--uses a battery
ASCII
standard character set on the key board
KMGT
kilo=1 thousand
mega=1 million
giga=1billion
tetra=1 trillion
Components of a computer based stsyem
uses: 1) computer hard/software
2) database
3) telecommunications
4) people
5) procedures
...to manage and distrubute digital info
Decision Support system
perform qualatative/quantative analysis for indiv decision making
Expert System
Acts as a human expert in a field
Transaction Processing System
monitors money transactions
Managment information system
helps individs+orginizations achieve goals by providing reports/info used to make better decisions
Social implications of info technology
businesses/professionals rely heavily on it, many benefical applications. affects every field today