5. Write full forms of the following.
CRT Cathode Ray Tube
LCD Liquid Crystal Display
LED Light Emitting Diode
CPU Central Processing Unit
ALU Arithmetic Logic Unit
CU Control Unit
MU Memory Unit
PCB Printed Board Circuit
6. Write short answer of the following questions.
a. Define the term computer hardware.
Ans: Computer hardware is the collection of physical parts of computer such as keyboard, mouse, monitor that you can touch and feel.
b. Write any four common hardware devices.
Ans: Keyboard, mouse, monitor, printer, speaker etc are the common hardware devices.
c. What are processing devices?
Ans: Central processing unit, motherboards are the processing devices.
d. List the types of monitor.
Ans: Monitor is the most commonly used output device which is used to display output in visual form. There are different types of monitor available such as:
CRT (Cathode Ray Tube)
LCD (Liquid Crystal Display)
LED (Light Emitting Diode)
Touch Screen monitors
e. Why is CPU called an electronic brain of computer?
Ans: Because it performs all the computations in the computer with the help of an electric signal.
7. Differentiate between the following.
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