Question 6. Give uses of computer in the following fields.

Answer:

Answer:

• Education
• Business
• Defense
• Media

• Education:
  • CBD (Computer based Education) software tool is used.
  • It is easier to search information on internet rather than searching in books.
  •  
  • It is easier to store information on computers rather than on hand written notes.
  • It is easier to share information using computer (internet) rather than following traditional sources.
  • Distance learning education is possible due to computer networking.
• Business
  • Computers has vital role in maintain business.
  • Ordering products, price checking as easier using computer.
  • Businessmen can easily maintain/ keep track of their business loss and profit.
• Defense
  • Controlling unarmed air-craft.
  • GPS can be used to find exact coordinates of a location.
  • Computers can guide incoming missiles.
  • Almost all the modern weapons can be controlled by computer.
• Media
  • Computers are used in print and electronic media.
  • Print media like newspapers, magazines are designed and generated using computer.
  • In Electronic media like email, Websites, blogging, TV computer are used.

Question 7. Write note on any five input devices.

Answer:

1. Keyboard:

• Keyboard allows user to enter data into computer
• Keyboard includes alphabets, numbers, punctuation and other keys
• Most popular keyboard is QWERTY layout because the top most alphabetic keys are QWERTY
  

2. Mouse:

• Mouse is an input pointing device.
• Mechanical Mouse has a rubber ball on its underside to detect movement of mouse.
• A cordless mouse transmits data using wireless technology.

3. Touch Screen:

• Touch screen is a touch sensitive input device
• It is used in stores, hotels and airports.
• Touch screens are used in ATM machines.

4. Digital Camera:

• A digital camera takes pictures and stores the images digitally.
• Digital camera use different media to storeimages like memory card etc
• The quality if digital camera is determined by resolution and color depth.

5. Microphone

• Microphone is an input device
• Microphone is used for voice recording
• Microphone converts voice signal into digital form