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Data transfer between CPU and the I/O devices may be done in different techniques. Briefly explain to distinguish the THREE (3) possible techniques as follows:

Data transfer between CPU and the I/O devices may be done in different techniques. Briefly explain to distinguish the THREE (3) possible techniques as follows: 


  • Programmed I/O
  • Interrupt-initiated 1/O
  • Direct Memory Access (DMA).

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