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I/O Interface

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Describe, in general terms, the operation of and the advantages of the following types of I/O interface:

a. Polling

b. Interrupt-driven

c. DMA-driven

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a. Polling
- Polling is an I/O interface wherein the computer will check for the readiness of the I/O device. When it sees that the I/O device is ready, it will then access the device for computer program operation. Its advantage is that it is a simple interface and is usually used by very low level I/O device hardware. But polling is inefficient because the time ...

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