Solution of Questions of Chapter 2

 A.     Tick the correct answer:

1.      Primary memory is also known as ____ memory.

B. Main

2.      What is the nature of ROM?

B. Non volatile

3.      The type of ROM that erases its contents by ultraviolet light is ___

A. EPROM

4.      A temporary storage area for instructions that enhances the CPU speed is_____

A. Cache Memory

5.      Which of the following is a secondary memory?

C. Hard Disk

B.      Write ‘T’ for True and ‘F’ for False statements:

1.      RAM is used to store data permanently.                                                      F

2.      SRAM is efficient and fast, but very expensive.                                          T         

3.      A memory module is a circuit board that holds memory chips.                T

4.      EEPROM uses ultraviolet light to erase its contents.                                 F

5.      Cache cannot improve the processing speed of the CPU.                          F

C.      Fill in blanks:

1.      The computer memory is measured in _____.	Bits
2.      A group of four bits in known as _______.	Nibble
3.      ___ is the process of copying items from RAM to Hard disk.	Copying (backup)
4.      A newer type of RAM which stores data using magnetic charges is ____.	Magneto Resistive RAM
5.      A DIMM has ___ on opposite sides of the circuit board that do not  connect.	Memory Chips

 

D.     Differentiate between the following

1.      Primary Memory, Secondary Memory

Primary Memory	Secondary Memory
1. It is the main Memory of the computer System.	1. It is the backup memory of the computer System.
2. RAM and ROM are the example of Primary Memory	2. Hard Disk is the example of Secondary Memory

 

2.      RAM and ROM

RAM	ROM
1. RAM stands for RANDOM ACCESS MEMORY.	1. ROM stands for READ ONLY MEMORY.
2. It is Volatile in nature.	2. It is Non-volatile in nature.
3. DRAM, SRAM are some examples of RAM.	3. PROM, EPROM are some examples of ROM.

 

E.      Answer in 1 or 2 sentences.

1.      Write a short note on memory units.

Ans.: Computer process and stores information in binary number format that is the combination of 0 and 1. With binary digits memory units for computer can be defined which are generally measured in bits and bytes.

2.      What do you mean by memory modules?

Ans.: Memory module is a circuit board that holds memory chips it makes the main memory of the computer system.

SIMMs, DIMMS are the example of Memory modules.

3.      Write the different variations of ROM Chips.

Ans.: The different variations of ROM chips are as follows:

a)      PROM or Programmable Read Only Memory.

b)     EPROM or Erasable Programmable Read Only Memory.

c)      EEPROM or Electrically Erasable Programmable Read Only Memory.

F.       Answer briefly:

1.      How will you classify memory?

Ans.: Memory can be classified as Follows:

a)      Primary Memory

a.      Random Access Memory

b.      Read Only Memory

c.       Cache Memory

b)     Secondary Memory

 

2.      Explain the purpose of the cache memory in the computer.

Ans.: Cache is a temporary storage area for instruction and data that enhances the CPU processing speed. Cache memory improves the processing speed of the computers by storing frequently used instruction and data.

Nowadays in general computer system it comes embedded with the Computer Processor Unit (CPU).

3.      Write the different variations of RAM Chips.

Ans.: The different variations of RAM chips are as follows:

a)      SDRAM or Synchronous Dynamic RAM

b)     DDR RAM or Double Data Rate RAM.

a.      DDR2 RAM

b.      DDR3 RAM

c.       DDR4 RAM

d.      DDR5 RAM

c)      RAMBUS RAM  (defunct)

d)     Static RAM

e)      MRAM or Magneto Resistive RAM.