Samacheer Kalvi 9th Science Solutions Chapter 26 Parts of Computer

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Tamilnadu Samacheer Kalvi 9th Science Solutions Chapter 26 Parts of Computer

Samacheer Kalvi 9th Science Parts of Computer Textbook Exercises

I. Choose the correct answer.

Question 1.
Which one of the following is an output device?
(a) Mouse
(b) Keyboard
(c) Speaker
(d) Pendrive
Answer:
(c) Speaker

Question 2.
Name the cable that connects CPU to the Monitor.
(a) Ethernet
(b) VGA
(c) HDMI
(d) USB
Answer:
(b) VGA

Question 3.
Which one of the following is an input device?
(a) Speaker
(b) Mouse
(c) Monitor
(d) Printer
Answer:
(b) Mouse

Question 4.
Which one of the following is an example for wireless connections?
(a) Wi-Fi
(b) Electric wires
(c) VGA
(d) USB
Answer:
(a) Wi-Fi

Question 5.
Pen drive is ………… device.
(a) Output
(b) Input
(c) Storage
(d) Connecting cable
Answer:
(c) Storage

II. Match the following.

1. Bluetooth – (a) Connecting cable
2. Printer – (b) LDMI
3. Keyboard – (c) Wireless connection
4. HDMI – (d) Output device

Answer:

1. (c) Wireless connection
2. (d) Output device
3. (b) LDMI
4. (a) Connecting cable

III. Short answer.

Question 1.
Name the parts of a computer.
Answer:
Three parts of the computer are:

1. Input Unit
2. Central Processing Unit (CPU)
3. Output Unit.

Question 2.
Bring out any two differences between input and output devices.
Answer:

Input Device	Output Device
The devices that are used to enter data are called input devices.	The Output device converts the command received by the computer in the form of binary signals into easily understandable characters
Example: Keyboard, Mouse, Scanner, Barcode reader	Example: Monitor, Printer, Speaker, scanner

Samacheer Kalvi 9th Science Parts of Computer Additional Questions

I. Short answers questions.

Question 1.
How are computers classified?
Answer:
The computers can be classified based on their design, shape, speed, efficiency, working of the memory unit and their applications. The computers can be classified as follows;

1. Mainframe Computer
2. Mini Computer
3. Micro or personal computer
4. Supercomputer

Question 2.
Name two wireless connections and how it is used.
Answer:
Bluetooth, Wi-Fi is used to connect to the internet without using any connecting cables.

• Bluetooth: Mouse, Keyboard can be connected to the computer using Bluetooth.
  Used in sharing data with nearby devices.
• Wi-Fi: Net connectivity can be obtained using Wi-Fi without any connecting cables. Any data from anywhere can be shared using Wi-Fi.

Question 3.
What is a memory unit and where is it present?
Answer:
The memory unit in the computer saves all data and information temporarily. It is present in the Central Processing Unit (CPU) which is the brain of the Computer.

II. Long answers questions.

Question 1.
Explain the types and functions of cables.
Answer:
The types of cable include Video Graphics Array (VGA), High Definition Multimedia Interface (HDMI), Universal Serial Bus (USB), Data cable, Power Cord, Mic cable, Ethernet cable.