external and internal

CHAPTER -1 COMPUTER HARDWARE- INTERNAL AND EXTERNAL Q1. Define the term Computer? Answer: A computer is an electronic machine which helps us to enter data on the form of input, process it, store it and give the result as its output. Q2. What are external hardware? Answer: The hardware parts that are outside the computer case are called external hardware. Q3. What are internal hardware? Answer: The hardware parts that are inside the computer case are called internal hardware. Q4. Name four external hardware? Answer: The four external hardware are i. Keyboard ii. Mouse iii. Monitor iv. Printer Q5. Name four internal hardware? Answer: The four internal hardware are i. Motherboard ii. Power supply iii. CPU iv. RAM Q6. What are peripheral devices? Answer: The external hardware devices are called peripheral devices. Q7. What are ports? Answer: Ports are the connecting points where peripheral devices connect with the motherboard.

Q8. Why is SMPS very important for a computer? Answer: A power supply or SMPS also known as Switched Mode Power Supply is very important for a computer because it converts a high voltage power into low voltage power. Q9. Why is motherboard so important? Answer: The motherboard is important because it is the main circuit board where all other internal components are connect to it. Q10. What is an input device? Answer: An input device sends data to the computer in the form of instruction. Q11. What is an output device? Answer: An output device receives data from the computer and displays it. Q12. Name four input device? Answer: The input devices are i. Keyboard ii. Mouse iii. Scanner iv. joystick Q13. Name four output device? Answer: The four output device are i. Monitor ii. Printer iii. Projector iv. Speaker Q14. Define the term CPU? Answer: The CPU is also called Central Processing Unit which is known as the brain of the computer because it controls all the functions of the computer. Q15. What is Hard Disk? Answer: The Hard Disk is the main storage device which is fitted inside the computer system. It stores the Operating system and other application programs.