9.2. Unit – 2 Control Unit

Try these first

1. 1.

   What is the main function of control signals in a CPU?

   Hint

   Think about what controls operations in the CPU.

2. 2.

   What does the instruction register hold?

   Hint

   Consider its role in executing commands.

3. 3.

   What is the primary role of the instruction register?

   • Store data
   • Hold opcode
   • Manage control signals

   Hint

   Think about the command it gives to the control unit.

4. 4.

   True or False: Control signals can only be internal to the CPU.

   • True
   • False

   Hint

   Think about the roles of memory and I/O.

5. 5.

   Imagine a scenario where the instruction register obtains an opcode that requires a memory read. Describe the sequence of control signals generated, including any relevant timing considerations.

   Hint

   Break down each action in the sequence.

6. 6.

   Discuss how varying clock speeds could potentially influence the effectiveness of signal processing in the control unit operations.

   Hint

   Consider the trade-offs involved with speed versus accuracy.