Advantages of Computers


  • The speed of a computer is measured in terms of the number of instructions that it can perform or execute in a second.
  • The speeds of computers are measured in milli­seconds (10~3 sec), micro-seconds (10*6 sec), and nano seconds (10~9sec).
  • Computers are superfast machines and can process millions of instructions per second.
  • Smaller computers can execute thousands of instructions per second, while the more complex machines can execute millions of instructions per second.


  • Computers are very accurate. They are capable of executing hundreds of instructions without any errors.
  • They do not make mistakes in their computations. They perform each and every calculation with the same accuracy.


  • The efficiency of computers does not decrease with age.
  • The computers can perform repeated tasks with the same efficiency any number of times without exhausting there selves.
  • Even if they are instructed to execute millions of instructions, they are capable of executing them all with the same speed and efficiency without exhaustion.

Storage Capability: 

  • Computers are capable of storing large amounts of data in their storage devices.
  • These dev ices occupy very less space and can store millions of characters in condensed forms.
  • These storage devices typically include floppy disks, tapes, hard disks, CDs etc, the data stored on these devices can be retrieved and reused whenever it is required in future.


  • Computers are very versatile. They are capable not only of performing complex mathematical tasks of science and engineering, but also other nonnumerical operations fielding air-line reservation, electricity bills, data base management etc.