cameroon gce advanced level 2025 microprocessor and computer technology 1

Based on the image you provided, here are the multiple-choice questions from the document.

1. The operation of the timing and control unit in a microprocessor is affected by the:

   A. instruction decoder

   B. accumulator

   C. arithmetic logic unit

   D. register array

2. During the fetch cycle of a processor

   A. data is stored as a result

   B. data is processed in the ALU

   C. instructions are read from the memory

   D. instructions are executed in the processor

3. The register that carries the address of the next data to be fetched from memory is called

   A. Accumulator

   B. Program counter

   C. Stack pointer

   D. Flag register

4. The register that stores the state of the result of a recently carried out operation is called

   A. flag register

   B. stack pointer

   C. program counter

   D. accumulator

5. If the bus width of the program counter is 16 bits then the size of the address bus is

   A. 8 bits

   B. 32 bits

   C. 64 bits

   D. 16 bits

6. The bus in a microprocessor that carries the READ signal is called

   A. data bus

   B. control bus

   C. address bus

   D. internal bus

7. If the size of the address bus of an 8 bits microprocessor is 16 bits, its addressable capacity is

   A. 8KB

   B. 16KB

   C. 32KB

   D. 64KB

8. The unit in the microprocessor that causes the program counter to increment its value is called

   A. Instruction decoder

   B. Address register

   C. Timing and control

   D. System clock

9. Return from sub-routine addresses are usually stored in the

   A. accumulator

   B. stack

   C. program counter

   D. instruction decoder

10. The register in the microprocessor that stores the result of a recently carried out arithmetic operation is called the

    A. Program counter

    B. Stack pointer

    C. Accumulator

    D. Instruction decoder

11. If a processor is described as 8 bits, then the size of its accumulator is

    A. 64 bits

    B. 32 bits

    C. 16 bits

    D. 8 bits

12. Which of the following is the manufacturer of the 8085 microprocessor?

    A. Intel

    B. Motorola

    C. Cyrix

    D. AMD

13. The execution of an instruction takes places in the

    A. timing and control

    B. stack

    C. program counter

    D. arithmetic and logic unit

14. A 10-bit address bus support

    A. 1,000,000 memory addresses

    B. 1024 memory addresses

    C. 100 memory addresses

    D. 10,000 memory addresses

15. A bus that is used to transfer information both to and from the microprocessor is the

    A. control bus

    B. address bus

    C. internal bus

    D. data bus

16. Which of the following is an assembly language instruction that alters the course of the program?

    A. Loop

    B. Jump

    C. Load

    D. Store

17. When the execution sequence of a program is interrupted, the address of the next instruction to be executed in the sequence is stored in the

    A. Program counter

    B. Stack

    C. Accumulator

    D. Stack pointer

18. What is the size of the instruction STA $8001?

    A. 2 bytes

    B. 3 bytes

    C. 4 bytes

    D. 5 bytes