Components of a Computer System

Part A

Unit III

Chapter 8                                      COMPONENTS OF A COMPUTER SYSTEM

 

Multiple Choice questions.

1.       What are raw facts and figures called?

a. Information                                                    b. Output      

              c. Data                                                                    d. None of these

2.       Which of the following is one of the characteristics of a computer?

a. No IQ                                                                 b. Inability to think on its own     

              c. Speed                                                                  d.  None of the above

3.       Which of the following is also known as a microprocessor?

a.    CPU                                                                  b. MU      

              c. CU                                                                        d. ALU

4.       How many bits are there in a nibble:

a. 5 bits                                                                  b. 8 bits  

              c. 3 bits                                                                    d. 4 bits

5.       What are RAM and ROM collectively known as?

a. Primary Memory                                           b. Tertiary Memory   

              c. Secondary Memory                       d. External Memory

Reason and Assertion

1.       Assertion (A): Output is also called meaningful data or information.

Reason(R): It is obtained after manipulation and process of input data.

       Ans.  ii

 

2.       Assertion (A): Cache memory acts as a buffer between the CPU and the main memory.

Reason (R): It is also called as external memory as it can be stored anywhere.

       Ans. iii

Short Answer Type Questions

1.       What do you understand by a computer system?

Ans. Computer system is a collection of different hardware and software components put up together to perform to input, process and output the data.

2.       From which word, has ‘Computer’ been derived?

Ans. The word ‘computer’ has been derived from the word Compute which means to calculate.

3.       What is data?

Ans. Data comprises of raw facts and figures. It can be anything such as numbers, alphabet, symbols etc.

4.       Into how many types can the RAM be further divided? Name those types.

Ans. RAM can be further divided in two types: Dynamic RAM and Static RAM.

5.       Which type of ROM contains the contents that can be erased by ultraviolet light?

Ans. EPROM (Erasable Programmable Read Only Memory)  contains the contents that can be erased by ultraviolet light.

6.       Give three examples of secondary storage devices.

HDD (Hard Disk Drive), SSD (Solid State Drive) and Pen drive are three examples of secondary storage devices.

 

7.       Name the core functions performed by a computer.

Ans. The core functions of the computer are input, process, output, and store the data.

8.       What is the principle of GIGO?

Ans. GIGO stands for Garbage In, Garbage Out. If we give wrong instructions to process the data, we shall get wrong result.

Long Answer type Questions

1.       Define accuracy and speed as characteristics of a computer.

Ans. In computer science, accuracy refers to the correctness and precision of a computer's results, while speed refers to how quickly a computer can perform tasks and process data. Computers are designed to perform calculations and operations with high accuracy, minimizing errors, and they are also known for their ability to process information at incredibly high speeds

2.       Discuss processing device in detail.

Ans. The processing device of a computer system is the CPU or the Central Processing Unit. It controls the overall functioning of a computer system by sending control instructions/signals to all other units of the computer system. The CPU performs the basic arithmetical, logical and input/output operations of the computer system.

3.       How is RAM  different from ROM

Ans. RAM (Random Access Memory) is volatile memory, meaning it loses its data when the power is turned off, while ROM (Read Only Memory) is non-volatile, retaining its data even without power. RAM is used for actively running programs and data, providing fast access for the CPU, whereas ROM stores essential system instructions like the BIOS, which are needed for booting up the computer

Application Based Questions

1.       Which part of CPU works like a calculator and also performs all logical and relational operations?

Ans. ALU (Arithmetic Logic Unit) works like a calculator and performs all logical and relational operations.

2.       What type of ROM would you use if you want to erase and rewrite frequently and quickly?

Ans. EEPROM (Electrically Erasable Programmable Read Only Memory) would the used. 

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