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Input/Output Interface


I/O interface provides a method for transferring information between CPU and external devices. The I/O interface resolves the differences that exist between the cpu and each External device. The major differences are:

  1. Conversion of signals between CPU and external devices.
  2. Synchronization issues due to the speed difference between CPU(extremely faster) and external devices (very slow).
  3. Data codes and formats in External devices differ from the word format in the CPU and memory.
  4. Difference in operating modes external devices with each other.

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