CHAPTER 2: COMPUTER MEMORY

CHAPTER 2: COMPUTER MEMORY

1. Primary Memory and 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 examples of Primary Memory

2. Hard Disk is an 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. 1. Write a short note on memory units.

Computer process and store information in form of two digits 0 and 1. They are called binary digits or bits. The other units are nibble, byte, kilobyte, megabyte, gigabyte etc.

 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:

  1. PROM or Programmable Read Only Memory.
  2. EPROM or Erasable Programmable Read Only Memory.
  3. EEPROM or Electrically Erasable Programmable Read Only Memory.

 F. 1. How will you classify memory?

Memory can be classified as Primary Memory and Secondary Memory

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

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.

 3.   Write the different variations of RAM Chips.

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

a) Dynamic Ram

          i. SDRAM or Synchronous Dynamic RAM

         ii. DDR RAM or Double Data Rate RAM.

         iii. DDR3, DDR3, DDR4

         iv. RAMBUS DRAM  

b) Static RAM

c) MRAM or Magneto Resistive RAM.

 

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