Question 7. Give uses of computer in the following fields.

Answer:

• Education
• Business
• Defense
• Media

• Education:
  • It is easier to search information on internet rather than searching in books.
  • 2. It is easier to store information on computers rather than on hand written notes.
  • 3. It is easier to share information using computer (internet) rather than following traditional sources.
  • 4. 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 8. Explain scope of the following careers in IT

Answer: One has many job opportunities in IT industries:

• Software Engineer:
Software Engineer is an engineer who applies principles of Software Engineering to design,development, testing and evaluation of the software. Software Engineer works in government,business and software houses
• System Analyst:
Software Analyst researches problems, plans solutions, recommend software and systems and coordinates development to meet business requirement. System Analyst are optimized problem solver.
• Hardware Engineer
Hardware Engineer plans, design, develop, test and oversees the installation of computer hardware such as circuit board, memory chips etc.

Question 9. 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.

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