1. ► Typical instruction execution has 6 clock cycles

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

3. ► How many timers are present in 8051?

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

5. ► Ports are not involved in external interrupts.

6. ► 8051 has only 8 bit counter.

7. ► Latch in front of ports are redundant.

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

9. ► Which company introduced 8051?

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

11. ► Which addresses are for SFRs?

12. ► 8051 can be considered system-on-chip because it has

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

14. ► Multiplication takes only one machine cycle.

15. ► 8051 has separate bit addressable memory space.

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

17. ► 8051 can be used for automotive control.

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

19. ► 8051 datapath is

20. ► 8051 has single memory space for program and data.