Components of Computer Sys (2) Flashcards
Data that has been processed into a useful form
output
any hardware component that can convey
information to one or more people
output device
Output device that visually conveys text, graphics, and video information
display device
Information on display device sometimes
called ___.
soft copy
houses display device that is packaged as separate peripheral
monitor
Uses liquid crystal display; has a small footprint
LCD monitor
Allows users to run multiple applications simultaneously
multiple LCD monitors
Number of horizontal and vertical pixels in a display device
resolution
Sharpness and clarity of the image
resolution
[T or F] Higher resolution makes image sharper, displays more text on screen, makes some elements
smaller
True
How do you use an LCD monitor with a video card?
Plug monitor into Digital Video Interface (DVI) port or an HDMI (High-Definition Multimedia Interface) port on computer
Displays image by applying voltage to layer of gas
plasma monitor
Larger screen size and richer colors than LCD, but are more expensive
plasma monitor
Contains cathode-ray tube (CRT); Screen coated with tiny dots of phosphor material; Common sizes are 15, 17, 19, 21, and 22 inches
CRT monitor
diagonal measurement of actual viewing area
Viewable size
Encourages manufacturers to create energy-efficient devices that require little power when not in use
ENERGY STAR program
Output device that produces text and graphics on a physical medium
printer
Forms characters and graphics without striking paper
nonimpact printer
sprays tiny drops of liquid ink onto paper
Ink-jet printer
Prints in black-and-white or color on a variety of paper types
ink-jet types
Sharpness and clarity; Measured by number of dots per inch (dpi) printer can output
resolution of a printer
Color printer that produces photo-lab-quality pictures
photo printer
standard technology that allows you to print pictures directly from a digital camera
PictBridge
High-speed, high-quality nonimpact printer; Prints text and graphics in high-quality resolution, ranging from 1,200 to 2,400 dpi; costs more than ink-jet printer
Laser printer
[T or F] Many photo printers DON’T have a built-in card slot
False
Generates images by pushing electrically heated pins against heat-sensitive paper
thermal printer
Small, lightweight, battery-powered printer that allows mobile user to print from notebook computer, Tablet PC, smart phone, or other personal mobile device while traveling
mobile printer
uses heat to transfer dye to specially coated paper
Dye-sublimation printer (also called a digital photo printer)
Small printer that prints on adhesive-type material; Most also print bar codes
label printers
has built-in digital scale and prints postage stamps
postage printer
Sophisticated printer used to produce high-quality drawings
plotter
creates photo-realistic-quality color prints
large-format printer
Impact printer that produces printed images
when tiny wire pins strike ribbon
dot-matrix printer
forms characters by striking mechanism against inked ribbon that contacts paper
impact printer
- High-speed impact printer that prints entire line
at a time - Speed measured in lines per minute (lpm)
line printer
type of line printer; prints fully formed characters using a hammer mechanism
band printer
type of line printer; high-speed printer that works like dot-matrix printer
Shuttle-matrix printer
Computer component that produces music, speech, or other sounds
audio output device
common devices in audio output device
speakers and headsets
- device that transmits and receives documents over telephone lines
- Converts an original document into a digitized image
- Many computers include fax capability
facsimile (fax) machine
Modem that allows you to send and receive electronic documents as faxes
fax modem
Provides functionality of printer, scanner, copy machine, and fax machine
multifunction peripheral
- Device that takes text and images from computer screen and projects them onto larger screen
- DLP projector
- LCD projector
data projecter
- Touch-sensitive device that displays the image on a connected computer screen
- SMART board
interactive whiteboard
Sends resistance to device in response to actions of user
force feedback
the number of bytes a storage medium
can hold
capacity
the computer hardware that records and/or retrieves items to and from storage media
storage device
the process of transferring items from a storage medium into memory
reading
the process of transferring items from memory to a storage medium
writing
contains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information
hard disk
removable flash memory device that you insert and remove from a slot in a computer, mobile device, or card reader/writer
memory card
plug into a USB port on a computer or mobile device (512 MB-100 GB)
USB flash drives
is a removable device that fits in an ExpressCard slot; Developed by the PCMCIA
ExpressCard module
3 examples of flash memory storage
- memory card
- USB flash drives
- ExpressCard module
an Internet service that provides storage to computer users (may or may not be free)
Cloud storage
consists of a flat, round, portable disc made of metal, plastic, and lacquer that is written and read by a laser; Typically store software, data, digital photos,
movies, and music
optical disc
2 types of optical discs
- read only
2. rewritable
is a magnetically coated ribbon of plastic capable of storing large amounts of data and information
tape
reads and writes data and information on a tape (sequential access)
tape drive
contains a magnetic stripe that stores information
magnetic stripe card
stores data on a thin microprocessor embedded in the card
smart card
store microscopic images of documents on a roll or sheet film
Microfilm and microfiche
stores huge volumes of data and information for large businesses; Uses special hardware for heavy use, maximum availability, and maximum efficiency
enterprise storage
describes a process in which two or more computers or devices transfer data, instructions, and information
Computer communications
[T or F] Users can send and receive wireless messages
using wireless messaging services
True
allows users to send and receive short text messages on a phone or other mobile device or computer
text messaging
allows users to send pictures and sound files
picture messaging
allows users to send short video clips
Video messaging
allows wireless users to exchange real‐time
messages with one or more other users
Wireless instant messaging
4 Uses of Computer Communications
- text messaging
- video messaging
- picture messaging
- wireless instant messaging
allow people to connect wirelessly to the Internet from home, work, school, and in many public locations
Wireless Internet access points
coffeehouse, restaurant, or other location that provides personal computers with Internet access to its customers
cybercafé
a navigation system that consists of one or more earth‐based receivers that accept and analyze signals sent by satellites in order to determine the GPS receiver’s geographic location
global positioning system (GPS)
3 things about GPS receivers:
- built into many mobile device
- available as a handheld device
- available with new vehicles