STUPIDSID
1 (a)
Draw neat pin diagram of 8051.Explain how Port 0 assign as input and Output
port with suitable example.
7 M
1 (b)
Answer the following
1) Draw and describe 11.0592 MHz Clock.
2) Draw and describe Power-On RESET circuit.
3) Draw and describe interfacing of 8K × 8 Data chip with 8051.
4) Explain Read-Modify-Write feature of logical instruction.
5) Describe Bit v/s Byte addressing mode of 8051.
6) Convert 102D in to signed Hex number.
7) Divide 64H by 2H two times without using DIV instruction.
1) Draw and describe 11.0592 MHz Clock.
2) Draw and describe Power-On RESET circuit.
3) Draw and describe interfacing of 8K × 8 Data chip with 8051.
4) Explain Read-Modify-Write feature of logical instruction.
5) Describe Bit v/s Byte addressing mode of 8051.
6) Convert 102D in to signed Hex number.
7) Divide 64H by 2H two times without using DIV instruction.
7 M
2 (a)
Prepare Assembly Language Program (ALP) with schematic to interface SPDP
Relay with 8051.
7 M
2 (b)
Draw and describe interfacing diagram of ADC chip with 8051 microcontroller
with necessary program.
7 M
2 (c)
Write ALP to blink LED every 5 sec for 2 sec using 1 sec delay.
7 M
3 (a)
Describe TMOD register timer modes of 8051 with its timing range.
7 M
3 (b)
Draw and describe interfacing diagram of DAC chip with 89C51
microcontroller with necessary program.
7 M
3 (c)
Write an 8051 C program to create a frequency of 2500 Hz on pin P2.7. Use
Timer 1, mode 2 to create delay
7 M
3 (d)
Draw and describe the interfacing of ADC0804 with 8051 microcontroller.
7 M
4 (a)
Explain necessary hardware for counter programming with external input for
Mode 2.
7 M
4 (b)
Write a program to send the message "Happy New Year" to serial port. Assume
a Switch SW is connected to pin P1.2.Monitor its status and set the baud rate as
follows: If SW = 0, 4800 baud rate otherwise W = 1, 9600 baud rate. Assume
XTAL = 11.0592 MHz, 8-bit data, and 1 stop bit.
7 M
4 (c)
Why interrupts are required in programming? Explain it with IE Register.
7 M
4 (d)
Write a C program to get bit of data from P1.2 and sends it to P2.3, while
simultaneously creating a square wave of 50 μs period on pin P2.4. Use Timer
0 to create the square wave. Assume that XTAL = 11.0592 MHz
7 M
5 (a)
Explain PSW and PCON Special Function register in details.
7 M
5 (b)
What is look up table? Describe its application with microcontroller operation
7 M
5 (c)
Write the benefits of LCD over LED display. Draw and describe interfacing
16×2 lines LCD with 8051 microcontroller.
7 M
5 (d)
Prepare ALP with schematic and explain VR stepper motor driver circuit using
89C52 microcontroller.
7 M
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