1. ► An instruction need not be unique.

2. ► Decoder reads instruction from IR.

3. ► An instruction refers to a basic operation.

4. ► Decoding refers to figuring out what to do with the instruction.

5. ► During instruction fetch, instruction is usually put on the address bus.

6. ► Printer is a non-programmable system.

7. ► Hardware programmability is not at all possible.

8. ► CPU can understand assembly code.

9. ► ALU is part of datapath.

10. ► Micro-architecture has the complete details of the processor.

11. ► Presence of ROM and RAM provides possibility of parallel access.

12. ► Binary encoding of instruction need not be unique.

13. ► As long as ISA is same for two processors, program from one of the them to other is portable.

14. ► A jump leads to direct modification of program counter.

15. ► A microcontroller can work without register file.

16. ► ROM can be modified at run-time.

17. ► An instruction can be executed without decoding.

18. ► Instead of having both ROM and RAM, it would suffice to have just one memory.

19. ► ISA has the details of cycle level information of the processor.

20. ► Behaviour of programmable systems cannot be changed.