Question

1. Write down any two uses of computer in criminal identification?
II. Name the unit which is used to measure the processing speed of computer?
III. Write down at least one difference in between the digital camera and web
camera?
IV. Your School requires 1000 copies of high quality black and white printouts
quickly. It requires the output to be printed quietly since an important meeting
is being conducted in the office. Name the printer that you will prefer for above
task
V. What is assembler?
VI. Write down any 2 important features of Spreadsheet?
4. Answer the followings in 30 to 40 words: - (Attempt any 5). 2 * 5 = 10.
1. Differentiate in between the compiler & Interpreter? (At least 2 Differences).
II. How flatbed plotter works.
III. What is antivirus? Name any 2 antivirus software's?
IV. Differentiate in between the impact and non impact printers with at least
one example for each? (At least 2 differences).
V. What is Video Conferencing? Write down any 2 advantages of it?​

Answer 1

Answer:

4

Basic components of Computer

Input Unit

The devices which are used to input the data and programs in the computer are known

as "Input Devices". Input unit accepts instructions and data from the user and converts these

instructions and data in computer acceptable format which are sent to computer system for

processing.

Keyboard: Keyboard is most common input device. The data and

instructions are input by typing on the keyboard. The message typed on

the keyboard reaches the memory unit of a computer. It is connected to

a computer via a cable. Apart from alphabet and numeral keys, it has

other function keys for performing different functions.

Mouse: It is a pointing device. The mouse is rolled over the mouse pad,

which in turn controls the movement of the cursor in the screen. You can

click, double click or drag the mouse. Its sensor notifies the speed of its

movements to the computer, which in turn moves the cursor/pointer on the screen