Thapar University 2006 B.Tech Electronics and Communications Engineering Microcontroller & Its Apllications - Question Paper
Thapar Institute of Engineering & Technology
B.Tech ECE (4thYear)
Final Term exam
EC019 (Microcontroller & Its Apllications)
Thapar Institute of Engineering & Technology Electrical and Instrumentation Engineering Department
Microcontroller and its Applications EC - 019 Instr : MD Singh
End semester exam_11-12-2006_B.E. Final Year_M.M. 36
Ql. Attempt ANY TilKKK
a) Draw the architectural block diagram of 8051 and briefly explain it.
b) Write a programme to send data to P2 port whatever it is getting from PI continuously.
I lowever it also send some data at P0 whenever it comes at serial port at 4800 baud rate.
c) Draw the circuit diagram of 4-bit LCD interface with 8051 with all neccssary connections.
d)Writc down the algorithm to acquire data from ADC' 808/809.
3x4 12
Q2. Attempt ANY FOUR
a) Explain I.JMP. SJMP and AJMP.
b) When we use RD/RW pin of LCD in Read mode?
c) Explain the working of 3x3 matrix keypad with 8051
d) Main differences between PIC 16F877 and AT89C51
e) Is it possible to double the baud rale in 8051 without changing the crystal frequency?
f) What is Look up table? I low it can be used in a programme?
4x3 12
Q3. Attempt ANY SIX
a) Whal is DA instruction? Explain with an example.
b) I low will you set baud rate of 2400 for serial comm, in 8051.
c) What happens if an interrupt occurs during an interrupt?
d) Draw the pin diagram of RS232 connector.
e) I low w ill you count an event occurrence with 8051? Explain with How chart/steps.
0 What is SIHJE register?
g) What is Indexed addressing?
h) Differentiate between MOVC and MOVX instruction with an example.
i) Differentiate between Level triggered and Edge triggered interrupt with diagram.
6x2 12
Evaluated sheets will be shown on 6-12-06 at 3pm in instructor's office.
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| Earning: Approval pending. |
