Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
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
|