Computer & IT

note!Answer: C) Monitor
The video graphics card processes display signals and sends them to the monitor.

note!Answer: B) Thermal printer
Thermal printers are non-impact printers that use heat. Dot matrix, daisy wheel and line printers strike the paper.

note!Answer: A) Inkjet printer
Inkjet printers spray ink without striking the paper, so they are non-impact. The other three are impact printers.

note!Answer: C) 24 pins
A 24-pin print head gives the densest dot pattern and the best quality among these options.

note!Answer: D) Line printer
Line printers are fast, high-volume printers and are the traditional choice for mainframe systems.

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: C) Operating system
An operating system manages hardware and runs other programs, so it is system software. Word processors and spreadsheets are application software.

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.