DIRECTIONS: Read each question carefully. Then click on the dot next to the answer that most closely fits the question. Try to answer all questions on this quiz and when you are done, click on the grade me button at the bottom.

1. If your computer has an internal clock of 500 MHz, what does that mean?

it can do 500 million instructions each second
it can access memory 500 million times each second
its clock sends out a cycle of pulses 500 million times each second

2. What is the reciprocal of frequency called?

period
cycle
antifrequency
synchronization

3. Which mineral is often used in computer clocks?

diamond
quartz
mica
glass

4. In the following picture of a read bus cycle, when would the MAR latch values into its flip-flops?

rising edge of T1
falling edge of T1
rising edge of T2
falling edge of T2

5. Referring to the same bus cycle above, when would the data be latched into the MBR?

rising edge of T1
falling edge of T1
rising edge of T2
falling edge of T2

6. Which kind of a bus uses a clock?

synchronous
asynchronous

7. Why are flip-flops used instead of pure latches in making the MAR and MBR registers?

because they are cheaper
because they are faster
because they are more reliable and easy to control in terms of when the data is stored in them

8. Which of the following is a valid write operation on a bus?