{tocify} $title={Table of Contents}
UNIT 3 Programing in C
1. What are different data types used in microcontroller
2.What is difference between bit and sbit.
3.What is difference between signed and unsigned data type.
4. What is the size of both the timers in microcontroller 8051.
5.What is the use of TMOD register.
6. What is the use of TCON register.
7. Draw the structure of TMOD and TCON register.
8. What are the modes of operation for a timer.
9. What is difference between a timer and a counter.
10. WAP to operate timer 0 in mode 1 operation.
12. Why is mode 2 called an auto reload timer.
13. What is roll over
14. What happen during roll over
15. What is the use of TF and TR bits.
16. What are the special function registers associated with timers.
UNIT 4 Timer and Interuppts
1. What do you mean by interrupt.
2. Name the interrupts of microcontroller
3. How is priority set for the interrupts
4.How can we enable an interrupt in 8051.
5. What are special function registers associated with interrupts.
6. What is ADC, explain its parts.
7. Which pins are used for external interrupts.
UNIT 5 Serial Communication
1. What are different methods of communication.
2. What is difference between serial and parallel communication. With example
3. What is difference between synchronous and asynchronous communication. With example
4. What is difference between simplex, full duplex and half duplex communication. With example
5. What are special function registers associated with serial communication.
6. What is the use of SBUF
7. What are the steps associated with the serial communication
8. What is baud rate.
9.Why baud rates are possible in 8051
10. How to set the baud rates in 8051
11. Why a frequency of 11.08592MHz important for 8051
12. Explain the structure of SCON and PCON
13. What is the use of SMOD bit
14. Which register accommodates SMOD bit
15. What is GSM and AT Commands
16. How to interface a GSM module with 8051
17. What is IOT.
UNIT 6 8051 Interfacing
1.Explain the procedure of measuring voltage and current
2. What are the steps to interface a led, relay, stepper motor, and key
3. Write a program to interface led, relay, stepper motor, and key
4. What is full sequence and half sequence of operation for stepper