1. ► One machine cycle is same as one clock cycle.

2. ► How many timers are present in 8051?

3. ► Which addresses are for SFRs?

4. ► 8051 has single memory space for program and data.

5. ► 8051 has only 8 bit counter.

6. ► 8051 can be used for automotive control.

7. ► Which company introduced 8051?

8. ► 8051 has separate bit addressable memory space.

9. ► TCON register has no role in controlling timers.

10. ► Which register is always updated as part of arithmetic instructions?

11. ► Which ports can also be used to access external memories?

12. ► 8051 datapath is

13. ► 8051 can be considered system-on-chip because it has

14. ► Latch in front of ports are redundant.

15. ► How many register banks are present in 8051?

16. ► Ports are not involved in external interrupts.

17. ► Which register is used for accessing external data memory?

18. ► Typical instruction execution has 6 clock cycles

19. ► Which protocol is used for communication inside vehicles?

20. ► Multiplication takes only one machine cycle.