Differences Between Primary and Secondary Memory

Primary Storage Devices: Temporary in nature. Expensive. Faster but more costly. Lower storage capacity. Examples include RAM, ROM, etc.   Secondary Storage Devices Permanent in nature. Cheaper. Slower but more affordable. Higher storage capacity. Examples include FDD (Floppy Disk Drive), HDD (Hard Disk Drive), etc.   Data Representation: (a) BIT (Binary Digit): The smallest unit […]

Primary Storage Devices:

  1. Temporary in nature.
  2. Expensive.
  3. Faster but more costly.
  4. Lower storage capacity.
  5. Examples include RAM, ROM, etc.

 

Secondary Storage Devices

  1. Permanent in nature.
  2. Cheaper.
  3. Slower but more affordable.
  4. Higher storage capacity.
  5. Examples include FDD (Floppy Disk Drive), HDD (Hard Disk Drive), etc.

 

Data Representation:

(a) BIT (Binary Digit):

The smallest unit of information represents either 0 or 1.

 

(b) Nibble:

Four bits make up one nibble.

 

(c) Byte:

A unit of information consisting of a fixed number of bits, typically 8 bits.

 

(d) Character:

Represented by one byte; can be a letter, digit, punctuation mark, or special character.

 

(e) Word:

A combination of 2, 4, or 8 bytes, forming a word.

 

Data Measurement:

  1. 8 bits = 1 byte
  2. 1024 bytes = 1 kilobyte (KB)
  3. 1024 KB = 1 Megabyte (MB)
  4. 1024 MB = 1 Gigabyte (GB)
  5. 1024 GB = 1 Terabyte (TB)

 

This information provides a fundamental understanding of memory types, data representation, and data measurement in the context of computing systems.

Related Posts:

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