11th Class (HSSC-I) Computer Science Notes:- Unit-1 "Introduction to Computers" Short Questions and Answers (Q41 to Q50)

Class 11 Computer Science (SLO Based) Notes 

For the Examination 2024 and onwards under the 

Federal Board of Intermediate and Secondary Education (FBISE), Islamabad, Punjab Boards, Rawalpindi, Lahore, Karachi board, etc., and All other boards in Pakistan and abroad. 

Unit-1 

"Introduction to Computers"

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Class 8 Computer Science MCQs for practice (All Units Exercise) 

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1.  Short Response Questions and Answers:

Q41. What are the functions of the Touch Screen?

Ans: 

Touch Screen:

• It can be used both as an Input and output device.
  
• Pressure-sensitive screen.
  
• A user interacts with the computer by touching the icons or text on the screen using fingers or a stylus.
• Mostly popular in smartphones, PDAs, navigators, tablet PCs, etc.

Q42. What are the functions of the Light Pen?

Ans: 

Light Pen:

• Similar to a pen having a photo sensor at its tip.
  
• It is used for pointing and drawing on the screen.
• Provides better control and accuracy than a mouse and touch screen.
  
• Used for designing and engineering purposes.

Q45. What are the functions of the TouchPad?

Ans: 

Touch Pad:

• It is a touch-sensitive surface.
  
• Sense the movement of fingers and control the pointer movement on the screen Accordingly.
  
• Used in laptop computers as an alternative to mouse.
  
• Also has two buttons like a mouse below it.

Q46. What are the functions of the Microphone?

Ans: 

Microphone:

• It is used for voice input.
  
• It converts audio signals into electrical signals.
  
• A sound card then converts electric signals into digital form.

Q47. What are the functions of the Digital Camera?

Ans: 

Digital Camera:

• It captures
•  pictures and stores them in digital form.
  
• It has a memory card for storage.
  
• The images captured can be downloaded to the computer.
  
• Some digital cameras have LCD to view images, and edit or delete them.

Q48. What are the functions of the Scanners? Write its types.

Ans: 

Scanners:

It reads text or images from paper and stores them in a computer in digital form.

Types of scanners:

• Handheld scanner
  
• Flatbed scanner
  
• Barcode reader

Q49. What are the functions of the Handheld scanner?

Ans:

Handheld scanner:

• It is a handheld device that is moved over the image to be scanned.
  
• It must be moved with uniform speed to provide image without distortion.
  
• They are slower than flatbed scanners.
  

Q50. What are the functions of the Flatbed scanner?

Ans:

Flatbed scanner:

• It can scan entire images at a time.
  
• The image is placed face down on the glass and covered with a lid.
  

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Please Select from below 👇👇

Unit-1 (Important Short Q/A)

Short Q/A (1 to 10)
Short Q/A ( 11 to 20)
Short Q/A ( 21 to 30)
Short Q/A ( 31 to 40)
Short Q/A ( 41 to 50)
Short Q/A ( 51 to 60)

Unit-1 (Important Long Q/A)

Long Q/A No. 1

Long Q/A No. 2

Long Q/A No. 3

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Computer Science 11th Class Notes (Main Page)

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