A ____ is an input device that collects specific data directly from the environment and transmits it to a computer • sensor
What is the definition of a softcopy? • data in electronic form. • An output device must be used in order to view a softcopy.
Printed output is referred to as a (an): • Hardcopy
Pixel is short for? • Picture element
A ____ converts a person’s speech into digital signals. • Speech-recognition system
The image you see on the screen (monitor) is made up of tiny dots of light called? • pixels
The amount of space between the centers of adjacent pixels is referred to as the • Dot pitch (dp)
What factors affect screen clarity? Dot pitch Resolution Color depth Refresh rate
What is the definition of resolution? • The number of pixels (dots) per square inch.
The smaller the ___ the better the screen image. • Dot pitch
What type of monitor takes up less room on a desk? • CRT or • Flat-panel display? • Flat-panel display
The higher the ____ the better the screen image. • Color depth • Resolution • Refresh rate
The number of times per second that the pixels are recharged so that their glow remains bright. • Refresh rate
The amount of information, expressed in bits, that makes up the color of a pixel is called? • Color depth
Monitors fit in one of two possible categories. What are these categories? • CRT • Flat-panel display
CRT stands for? • Cathode Ray Tube
What type of flat-panel display screen is not as clear? • Passive-matrix
A flat-panel display uses what type of technology • Liquid Crystal Display
The three types of flat-panel display screens are? • Active-matrix • Passive-matrix • Gas plasma
With what type of flat-panel display screen is each pixel on the screen controlled by its own transistor. • Active-matrix display
How is the active-matrix display screen and the passive-matrix display screen different? • With the active-matrix each pixel on the screen controlled by its own transistor and with the passive-matrix each row or column of pixels on the screen is controlled by one transistor. • The active-matrix screen is more expensive. • The active-matrix screen has a better image.
What type of flat-panel display screen is least expensive? • Passive-matrix
dpi stands for ? • dots per inch
A sensor is • an input device that collects specific data directly from the environment and transmits it to a computer.
A printer fits in one of two categories. What are those two categories? • Impact printer • Non-impact printer
The term non-impact in reference to printers means what? • It forms characters and images without direct physical contact between the printing mechanism and the paper
A printer that makes physical contact with the paper is called a (an) • Impact printer
What are the types of impact printers? • Line printer • Dot-matrix
What are the types of non-impact printers? • Laser • Ink-jet • thermal
What type of printer forms an image on paper by spraying small droplets of ink? • Ink-jet
What type of printer uses a drum treated with magnetically charged toner in order to transfer an image onto paper? • laser
What type of printer uses colored waxes and heat to produce images by burning dots onto special paper. • Thermal printer
What is the purpose of a modem? • To convert Digital Signals to Analog Signals & Back
Modem is short for • modulate/demodulate.
Sending modem does what? • converts digital signals into analog signals for transmission over phone lines (i.e. modulates).
What type of modem demodulates (i.e. converts analog signals back into digital signals. • Receiving modem
The use of television video and sound technology to make it possible for people in different locations to see, hear, and talk with one another is called? • Videoconferencing
What is Groupware ? • Software that makes it possible for teams of co-workers to use networks of microcomputers to share information and to cooperate on projects.
The term that refers to working at the office using telecommunication technology so that one can work at the office while at home. • Telecommuting
What does the term “Virtual Office” mean. • An office that exists electronically and does not exist in a physical sense.
What type of signal does a digital television use? (tricky!) • Digital signal
A digital signal consists of ? • A series of 1’s and 0’s.
Signals through a communications path can be sent one of what two ways? • Wired • Wireless
What are the three methods of wired communication • Twisted-pair • Coaxial cable • Fiber-optic cable
Between these three methods of wired communication, • Twisted-pair • Coaxial cable • Fiber-optic cable which one is least expensive? • Twisted-pair
Between these three methods of wired communication, • Twisted-pair • Coaxial cable • Fiber-optic cable which one is resistant to interference? • Fiber-optic cable