67c Given the timing diagram and description below What is t

[6.7c] Given the timing diagram and description below: What is the time to complete an operation if the clock cycle time is 30 ns?

[6.7b] The timing diagram below illustrates a system in which operations occur as three consecutive clock cycles. Actions taking place in clock cycle 1 are scalable; that is, if the clock cycle time changes, the actions can be sped up or slowed down correspondingly. In cycle 2, the action process 1 requires 25 ns and in clock cycle 3 the action process 2 requires 32 ns. If the clock cycle is less than the time required for process 1 or process 2, then one or more wait cycles have to be inserted for the process to complete.

A)60 ns

B)90 ns

C)120 ns

D)150 ns

Solution

If the clock cycle time is 30ns then the time to complete an operation is 120ns

answer is C) 120ns