Tuesday, January 18, 2011

Explain the function of ASCII code

DEFINITION: American Standard Code for Information

Interchange & was proposed by ASA in 1963 & was finalized in 1968.

ASCII is standard of 7-bit code used to represent characters, which include letters, numbers & punctuation marks

Function of ASCII

ASCII was established to achieve compatibility between various types of data processing equipment making it possible for the components to communicate with each other successfully.

ASCII enables manufacturers to produce component that are assured to operate correctly in a computer.

JUSTIFICATION

ASCII makes it possible for humans to interact with a computer. It also enables users to purchase components that are compatible with their computer configurations.

HOW ASCII WORKS IN A COMPUTER SYSTEM ?

Example

  1. Number 9 is typed using the keyboard
  2. Electronic signal in sent to CPU for the computer to process.
  3. Number 9 is converted to 00111001
  4. Computer finishes processing the byte.
  5. The software converts the byte back to the number 9
  6. Number 9 is displayed on the monitor screen



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