Introduction to Computer Systems Lecture 7 Input/Output

What is I/O speed

State one input, output and one I/O device

What is the CPU and i/O speed mismatch ? and why is there a mismatch>

What do you need to make I/O work

Draw a I/O controller diagram

What are the functions of the I/O controller

What is isolated I/O

What is memory-mapped input/output?

State the three techinques to make I/O work

State the method for polling/ programmed I/O running a insturction

Define polling

Summarise polling

What is interrupt driven

What is the read operation for the interrupt driven I/O

What are interrupt handlers?

What is context and why is it important in interrupt driven I/O?

What happens when there are multiple interrupts?

What is the disadvantage of interrupt driven I/O?

What is Direct Memory Access?

What is a DMA controller?

How does the DMA controller work>

What ind of device does DMA work best on

What is a magnetic disk?

Give a two examples of a magnetic disk

What is optical storage?

Name 4 forms of optical storage?