Introduction to Computer

1. What is the main purpose of an input device in a computer system ?
   1. To process data
   2. To store data
   3. To display data
   4. To enter data
   Show Answer

   Answer : D
   Explain: An input/output (I/O) device is a piece of hardware that can take, output, or process data. It receives data as input and provides it to a computer.
2. Which of the following is a volatile memory component in a computer ?
   1. Hard Disk Drive (HDD)
   2. Solid State Drive (SSD)
   3. Compact Disc (CD)
   4. Random Access Memory (RAM)
   Show Answer

   Answer : D
   Explain: RAM is internal memory that can be read from as well as written to. It is volatile in nature, 'means when power off, data lost'.
3. What is the primary function of a Central Processing Unit (CPU) ?
   1. Input data into the computer
   2. Store data for long-term use
   3. Perform calculations and control tasks
   4. Display graphical output
   Show Answer

   Answer : C
   Explain: CPU is the brain of computer where all or most of calculations take place. It consists of an arithmetic and logic unit (ALU), a control unit, and various registers.
4. What does GUI stand for in computing ?
   1. General Use Interface
   2. Graphical User Interface
   3. General User Instruction
   4. Graphic Use Instruction
   Show Answer

   Answer : B
   Explain: GUI - A graphics-based operating system interface that uses icons, menus and a mouse.
5. Which component of a computer is responsible for executing arithmetic and logic operations ?
   1. Monitor
   2. Keyboard
   3. ALU (Arithmetic Logic Unit)
   4. RAM
   Show Answer

   Answer : C
   Explain: ALU : It is a digital circuit that perfoms arithemtic and logical operations.
6. Which term refers to the physical components of a computer system ?
   1. Software
   2. Hardware
   3. Firmware
   4. Middleware
   Show Answer

   Answer : B
   Explain: Hardware are the physical component of computer. Example: Monitor, Speaker, Mouse, printer etc.
7. What is the role of the BIOS (Basic Input/Output System) in a computer ?
   1. Manage user accounts
   2. Run applications
   3. Provide input/output devices
   4. Initialize hardware during startup
   Show Answer

   Answer : D
   Explain: BIOS (basic input/output system) is the program a computer's microprocessor uses to start the computer system after it is powered on.
8. The first mechanical computer designed by Charles Babbage was called :
   1. Analytical Engine
   2. ENIAC
   3. UNIVAC
   4. Apple I
   Show Answer

   Answer : A
   Explain: Analytical Engine : first general purpose computer. Stored programs in the form of 'pegs' also called barrels.
9. What is the full form of ENIAC ?
   1. Electronic Numerical Integrated Computer
   2. Electronically Number Integrator and Computer
   3. Electron Numerical Integrator and Computer
   4. Electronic Numerical Integrator and Computer
   Show Answer

   Answer : D
   Explain: ENIAC ( Electronic Numerical Integrator and Computer) is the first electronic computer.
10. The first commercially successful computer, released in 1951, was named :
    1. IBM PC
    2. Macintosh
    3. UNIAC
    4. ENIAC
    Show Answer

    Answer : C
    Explain: Universal Automatic Computer is the first commerical computer developed by J. Preper Eckert and John Mauchly.
11. Who was known as the architecture of computer ?
    1. John von Neumann
    2. John Mauchly
    3. Alan tunning
    4. J. Preper Eckert
    Show Answer

    Answer : A
    Explain: Modern computers are based on a stored-program concept introduced by John Von Neumann. EDSAC (Electronic Delay Storage Automatic Calculator ) is first computer which provide storage capacity develop by John Von Neumann.
12. The first generation of computers used which type of electronic components for processing and storage?
    1. Transistors
    2. Vacuum tubes
    3. Integrated circuits
    4. Microprocessors
    Show Answer

    Answer : A
    Explain: Vaccum Tubes :An electronic device that controls the flow of electrons in a vacuum.
13. The development of microprocessors marked the beginning of which generation of computers ?
    1. Second generation
    2. Third generation
    3. Fourth generation
    4. Fifth generation
    Show Answer

    Answer : C
    Explain: Microprecessors uses in fourth generation. Second Gen - uses Transistor and in Third Generation use Integrated chips.
14. Which generation of computers is associated with artificial intelligence (AI) and parallel processing capabilities ?
    1. Second generation
    2. Third generation
    3. Fourth generation
    4. Fifth generation
    Show Answer

    Answer : D
    Explain: Fifth generation use AI and Ultra large scale integrated chips.
15. Computers that are used to control industrial processes and machinery are classified as :
    1. Mainframe computers
    2. Embedded computers
    3. Supercomputers
    4. Mini computers
    Show Answer

    Answer : B
    Explain: Embedded computers are machine which are incorporated or added onto other devices to perfom a predefined task.