28.3.3. Memory Data Register

Try these first

1. 1.

   What is the primary function of the Memory Data Register?

   Hint

   Think about what happens during a data transfer.

2. 2.

   What is one disadvantage of a single-bus architecture?

   Hint

   Remember how operations are performed in sequence.

3. 3.

   What does the Memory Data Register (MDR) do?

   • Holds temporary data
   • Stores permanent data
   • Generates control signals

   Hint

   Think about its role in data transfer.

4. 4.

   In which architecture can the MDR send data to multiple outputs simultaneously?

   • True
   • False

   Hint

   Consider the advantage of multiple buses.

5. 5.

   Design a scenario involving an application that performs multiple data accesses simultaneously. How would a three-bus architecture with an efficient MDR improve this process?

   Hint

   Think about how delaying operations could affect overall efficiency.

6. 6.

   Assuming we want to upgrade a single-bus architecture to a three-bus system. How would changes in the MDR improve overall CPU performance? What specific design choices would you implement?

   Hint

   Consider both hardware improvements and the implications of software efficiency.