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Quiz 22

Regarding Reading 22.

Although we've finished the computer (CPU, Memory, KBD, SCREEN) chapter 24 brings up some important concepts.

1. What is a bus, and what kinds of signals does it carry?
2. In general, what does an interrupt signal do?
3. How are the memory banks described in chapter 21 different from the RAM arrays we built?
4. What did old-timers call the ancient 25x80 text screens when used to view the contents of a punchcard?
5. In general, what are DMA signals used for?