Tamilnadu State Board New Syllabus Samacheer Kalvi 9th Science Guide Pdf Chapter 26 Parts of Computer Text Book Back Questions and Answers, Notes.

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

9th Science Guide Parts of Computer Text Book Back Questions and Answers

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

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

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

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

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

Question 5.
Pen drive is a/an ………….. device.
(a) output
(b) input
(c) storage
(d) connecting cable
Ans :
(c) storage

II. Match the following:

Question 1.

VGA Input device
Bluetooth Connecting cable
Printer LDMI
Keyboard Wireless connection
HDMI Output device

Answer:

VGA Input device
Bluetooth Wireless connection
Printer Output device
Keyboard LDMI
HDMI Connecting cable

III. Answer briefly :

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.

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

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

  1. The Input units help to send the data and commands for the processing.
  2. Input devices only allow for the input of data to a computer.

Output devices

  1. The Output units convert the command received by the computer in the form of binary signals into easily understandable characters.
  2. Output devices only receive the output of data from another device.

9th Science Guide Parts of Computer Additional Important Questions and Answers

I. Choose the correct answer:

Question 1.
………………… plays an important role in a computer as an input device.
(a) Keyboard
(b) Scanner
(c) Printer
(d) Mouse
Answer:
(a) Keyboard

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

Question 2.
………………….. is an essential part of the computer.
(a) Keyboard
(b) CPU
(c) Mouse
(d) Wi-Fi
Answer:
(c) Mouse

Question 3.
A bit has a single binary value either ……………….. or ………………..
(a) 1,-1
(b) 0,1
(c) 1,2
(d) 2,0
Answer:
(b) 0,1

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

Question 4.
The personal computer comes under the ……………….. computer.
(a) mainframe
(b) mini
(c) micro
(d) super
Answer:
(c) micro

Question 5.
………………..cable transmits high quality and high bandwidth streams of audio and video.
(a) VGA
(b) USB
(c) Data
(d) HDMI
Answer:
(d) HDMI

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

Question 6.
………………..is used to connect the speaker to the computer.
(a) Audio jack
(b) Power card
(c) Data cable
(d) USB cable
Answer:
(a) Audio jack

Question 7.
………………..cable helps to establish internet connectivity.
(a) Power card
(b) Audio jack
(c) Ethernet
(d) USB
Answer:
(c) Ethernet

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

II. Answer the following :

Question 1.
What are the input devices?
Answer:
The input unit helps to send the data and commands for processing. The devices that are used to enter data are called injfut devices.

Question 2.
Write some examples of input and output devices of a computer system.
Answer:
Input devices:
Keyboard, Mouse, Scanner, Barcode reader, Microphone, Web camera, Light pen are some of the input devices.

Output devices:
Monitor, Printer, Speaker, Scanner, are some of the output devices.

Question 3.
What is Keyboard?
Answer:

  • The keyboard plays an important role in a computer as an input device.
  • Numbers and alphabet play a role of data in the computer.
  • The keyboard helps to enter data.;
  • Keyboard has two types of keys, namely number keys and alphabet keys.
  • The keys with numbers are called number keys and the keys with letters are called alphabet keys.

Question 4.
Explain CPU.
Answer:
CPU (Central Processing Unit)

(i) Memory Unit
(ii) Arithmetic Logic Unit (ALU)
(iii) Control Unit

(i) Memory Unit: The memory unit in the computer saves all data and information temporarily. The data is measured in units which is called as Bit. A Bit has a single binary value either 0 or 1. We can classify memory unit into two types namely primary and secondary memory. Memory can be expanded externally with the help of Compact Disk (CD), Pendrive, etc.

(ii) Arithmetic Logic Unit : Arithmetic and Logic unit performs all arithmetic computations like addition, subtraction, multiplication and division.

(iii) Control Unit: The control unit controls the functions of all parts of the computer.

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

Question 5.
What is Bit?
Answer:
The memory unit in the computer saves all data and information temporarily. The data is measured in units which is called as Bit.

Question 6.
What are the types of monitors?
Answer:
There are two types of monitors namely.

  1. Cathode Ray Tube monitors (CRT)
  2. Thin Film Transistor Monitors (TFT)

Question 7.
What is the classification of the computer?
Answer:
The computers can be classified as follows based on their design, shape, speed, efficiency, working of the memory unit, and their applications.

  • Mainframe Computer
  • Mini Computer
  • Micro or personal compute
  • Supercomputer

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

Question 8.
Explain the types of cables.
Answer:
Video Graphics Array (VGA), High Definition Multimedia Interface (HDMI), Universal Serial Bus (USB), Data cable, Power Cord, Mic cable, Ethernet cable.

  • VGA Cable: It is used to connect the computer monitor with the CPU.
  • USB cable /cord: Devices like Printer, Pendrive, Scanner, Mouse, Keyboard, web camera, and Mobile phone devices are connected with the computer using a USB cord or cable.
  • HDMI Cable: HDMI cable transmits high quality and high bandwidth streams of audio and video. It connects the monitor, projector with the computer.
  • Data Cable: Data cable transmits data and it is used to connect a tablet, mobile phone to the CPU for data transfer.
  • Audio jack: The audio jack is used to connect the speaker to the computer.
  • Power cord: Power cord temporarily connects an appliance to the main electricity supply.
  • Mic cable: To connect the Mic (Microphone) to the CPU, Mic wire/cord is used.

Samacheer Kalvi 9th Science Guide Chapter 26 Parts of Computer

Question 9.
Explain wireless connections.
Answer:
Bluetooth, Wi-Fi is used to connect to the internet without using any connecting cables/devices.

  • Bluetooth: Mouse, Keyboard can be connected to the computer using Bluetooth. Using Bluetooth the data can be shared 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.