Computer Fundamental

note!Answer: C) Band printer
A band printer is a type of line printer that prints a full line at once using a rotating band of characters.

note!Answer: C) Laser printer
Laser printers use an electrostatic drum and toner, much like a photocopier.

note!Answer: C) Thermal printer
Thermal printers use heat-sensitive paper, and the heat darkens the printed areas.

note!Answer: C) Drum plotter
Drum plotters print on continuous roll paper, which suits seismograph-type continuous output.

note!Answer: D) Trackball
A trackball is a stationary device where the user rolls a ball on top to move the cursor.

note!Answer: D) Bar code
Vertical light and dark striped marks printed on products are called bar codes.

note!Answer: C) Analyst
A systems analyst studies the existing system and determines requirements for the new one.

note!Answer: C) Implementation
In the implementation phase the actual system is built and put into operation.

note!Answer: D) testing
Errors (bugs) are detected and removed during the testing phase.

note!Answer: A) Data
Unprocessed facts and figures are called data; processed data becomes information.

note!Answer: D) all
A computer is accurate, consistent and reliable, so 'all' is correct.

note!Answer: A) input, processing, output and storage
The four basic functions of a computer are input, processing, output and storage.

note!Answer: D) information
Processed data is called information.

note!Answer: A) animation
Animation creates the illusion of motion from a sequence of still images.

note!Answer: D) all
Multimedia combines text, graphics, animation, audio, voice and video.

note!Answer: D) data communication
Combining computing and communication technologies enables data communication.

note!Answer: A) M-commerce
Mobile commerce (M-commerce) is buying and selling through mobile phones.

note!Answer: B) E-commerce
Electronic commerce (E-commerce) covers business transactions conducted over the internet.

note!Answer: A) Hardware is tangible but software is intangible
Hardware is the physical, touchable part of a computer, while software is intangible programs.

note!Answer: A) Physical parts
Hardware refers to the physical parts of a computer system.