14.1. Computer Organization and Architecture: A Pedagogical Aspect

Try these first

1. 1.

   What is the purpose of the program counter?

   Hint

   Think about the flow of instruction execution.

2. 2.

   Define direct addressing.

   Hint

   Consider how operands are accessed in instructions.

3. 3.

   What does the program counter do?

   • Fetches the instruction
   • Holds the address of the next instruction
   • Executes arithmetic operations

   Hint

   Think about its role in instruction flow.

4. 4.

   True or False: Immediate addressing directly accesses a memory address.

   • True
   • False

   Hint

   Consider the meaning of immediate.

5. 5.

   Design a sequence of control signals required for direct addressing execution of the instruction 'ADD R1, 40'.

   Hint

   Map the flow of signals step by step.

6. 6.

   Create a flow diagram representing how indirect addressing operates during instruction execution.

   Hint

   Begin by identifying each step in the execution.