Computer and Latest IT gadgets

Computer and Latest IT gadgets


  • The word computer comes from the word “compute”, which means, “to calculate”
  • Thereby, a computer is an electronic device that can perform arithmetic operations at high speed
  • A computer is also called a data processor because it can store, process, and retrieve data whenever desired

The activity of processing data using a computer is called data processing

Data is raw material used as input and information is processed data obtained as output of data processing

Characteristics of Computer

1) Automatic: Given a job, computer can work on it automatically without human interventions

2) Speed: Computer can perform data processing jobs very fast, usually measured in microseconds (10-6), nanoseconds (10-9), and picoseconds (10-12)

3) Accuracy: Accuracy of a computer is consistently high and the degree of its accuracy depends upon its design. Computer errors caused due to incorrect input data or unreliable programs are often referred to as Garbage- In-Garbage-Out (GIGO)

4) Diligence: Computer is free from monotony, tiredness, and lack of concentration. It can continuously work for hours without creating any error and without grumbling

5) Versatility: Computer is capable of performing almost any task, if the task can be reduced to a finite series of logical steps

6) Power of Remembering: Computer can store and recall any amount of information because of its secondary storage capability. It forgets or looses certain information only when it is asked to do so

7) No I.Q.: A computer does only what it is programmed to do. It cannot take its own decision in this regard

8) No Feelings: Computers are devoid of emotions. Their judgement is based on the instructions given to them in the form of programs that are written by us (human beings)



Qus. 1 : Which unit controls the flow and manipulation of data and information.

  1. Arithmetic logic Unit
  2. Central Unit
  3. Middle Unit
  4. Control Unit
Qus. 2 : Which of the following number system uses only 0 and 1

  1. Decimal
  2. Octal
  3. Hexadecimal
  4. Binary
Qus. 3 : The earliest calculating devices are

  1. Abacus
  2. Clock
  3. calculator
  4. None of these.
Qus. 4 : The three sequential function of CPU operations are

  1. Decode, fetch, execute.
  2. Execute, decode, fetch.
  3. Fetch, execute, decode.
  4. Fetch, decode, execute.
Qus. 5 : The process of retaining data for future use is called

  1. Reading
  2. Writing
  3. Storing
  4. Coding
Qus. 6 : The process of manipulating the data to achieve some meaningful results is called

  1. Information handling
  2. Data sharing
  3. Data distribution
  4. Data processing
Qus. 7 : Assembly language is develop in which generation?

  1. first generation
  2. Second generation
  3. third generation
  4. Fourth generation
Qus. 8 : Param, Anurag Supercomputer belongs to which country?

  1. India
  2. China
  3. USA
  4. Japan
Qus. 9 : Who invented the punch card?

  1. John viecent
  2. Linus Torvalds
  3. Semyon Korsakv
  4. None
Qus. 10 : Which mobile works on iOS model?

  1. Apple
  2. Samsung
  3. Microsoft
  4. All
Qus. 11 : How many Bits in ASCII?

  1. 8 Bits
  2. 16 Bits
  3. 7 Bit
  4. 64 Bits
Qus. 12 : Which type of computer is convenient to carry while traveling?

  1. Mini computer
  2. Microcomputer
  3. Super computer
  4. Mainframe computer
Qus. 13 : Which strip is present at the bottom of screen

  1. Taskbar
  2. status bar
  3. Manubar
  4. Title bar
Qus. 14 : Which of the following extensions are not related to the LibreOffice?

  1. .odt
  2. .ods
  3. .odp
  4. .rtf
Qus. 15 : Which of the following is not an output device?

  1. Plotter
  2. Monitor
  3. Light pen
  4. printer
Qus. 16 : Example of Toggle Key is

  1. Caps lock
  2. Scroll lock
  3. Insert
  4. All of the above
Qus. 17 : Communication between a computer and a keyboard is ?

  1. Simplex
  2. Half-Duplex
  3. फुल डुप्लेक्स
  4. Duplex
Qus. 18 : Who invented Compact Disc?

  1. James T Russel
  2. Martin Cooper
  3. Joseph Marie Jacquard
  4. Fujio Masuoka
Qus. 19 : What you will use in 3d printing material?

  1. Resins
  2. Nintinol
  3. Rubber
  4. All the above
Qus. 20 : Which is both Input Output device?

  1. Mouse
  2. Keyboard
  3. VDU (Touchscreen)
  4. Scanner

Programs

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