STUPIDSID
1 (a)
Explain need of demultiplexing of ADO-AD7 of 8085 microprocessor
5 M
1 (b)
Explain difference between AJMP, SJMP, LJMP instruction of 8051 microcontroller
5 M
1 (c)
Write Program for 8255 PPI to read data from Port CL and transfer it to Port Cu
5 M
1 (d)
Decribe features of ARM controller
5 M
2 (a)
Draw and explain Timming diagram of LDA DOSOH
10 M
2 (b)
What is difference between memory mapped I/O and I/O mapped I/O? interface 8085-8255 in I/O mapped I/O
10 M
3 (a)
Draw and explain architecture of 8051 microcontroller
10 M
3 (b)
Write a 8051 assembly language program to transfer message "WELCOME" serially at 9600 boud 8 bit data, 1stop bit
10 M
4 (a)
Explain addressing modes of ARM controller with examples
10 M
4 (b)
Write a program to generate squarewave with pulse width of 100 as using 8155. Assume clock frequency is 3 MHz
10 M
5
(a) Interface 16KB EPROM using 8KB chip and 8KB RAM using 4KB chip. Use absolute decoding
(b) Explain interrupt structure of 8051 microcontroller and related SFRs.
(b) Explain interrupt structure of 8051 microcontroller and related SFRs.
20 M
6 (a)
Explain instruction DAA of 8085 with an example what are the contenst of Reg A after following Program executed :
6000 : MVI A, 11 H
MVI B, 22 H
LXI H, 600 C
CALL ADDs
ADI 33 H
INR A
HLT
ADDS : XTHL
ADDB
RET
6000 : MVI A, 11 H
MVI B, 22 H
LXI H, 600 C
CALL ADDs
ADI 33 H
INR A
HLT
ADDS : XTHL
ADDB
RET
10 M
6 (b)
Explain internal structure of I/O ports of 8051 microcontroller
10 M
7 (a)
Explain SIM and RIM instruction of 8085 microprocessor
10 M
7 (b)
Write a program for 8051 microcontroller to count the number of 1's and number of 0's in 8 bit number
10 M
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