Microprocessors and Microcontrollers

1. A microcontroller at-least should consist of:

• RAM, ROM, I/O ports and timers

• CPU, RAM, I/O ports and timers

• CPU, RAM, ROM, I/O ports and timers

• CPU, ROM, I/O ports and timers

2. Unlike microprocessors, microcontrollers make use of batteries because they have:

• high power dissipation

• low power consumption

• low voltage consumption

• low current consumption

3. What is the order decided by a processor or the CPU of a controller to execute an instruction?

• decode,fetch,execute

• execute,fetch,decode

• fetch,execute,decode

• fetch,decode,execute

4. If we say microcontroller is 8-bit then here 8-bit denotes size of:

• Data Bus

• ALU

• Control Bus

• Address Bus

5. How are the performance and the computer capability affected by increasing its internal bus width?

• it increases and turns better

• it decreases

• remains the same

• internal bus width doesn’t affect the performance in any way

6. Abbreviate CISC and RISC.

• Complete Instruction Set Computer, Reduced Instruction Set Computer

• Complex Instruction Set Computer, Reduced Instruction Set Computer

• Complex Instruction Set Computer, Reliable Instruction Set Computer

• Complete Instruction Set Computer, Reliable Instruction Set Computer

7. Give the names of the buses present in a controller for transferring data from one place to another?

• data bus, address bus

• data bus

• data bus, address bus, control bus

• address bus

8. What is the file extension that is loaded in a microcontroller for executing any instruction?

• .doc

• .c

• .txt

• .hex

9. What is the most appropriate criterion for choosing the right microcontroller of our choice?

• speed

• availability

• ease with the product

• all of the mentioned

10. Why microcontrollers are not called general purpose computers?

• because they have built in RAM and ROM

• because they design to perform dedicated task

• because they are cheap

• because they consume low power