STUPIDSID
1 (a)
Explain need of demultiplexing of ADO-AD7 of 8085 microprocessor.
5 M
1 (b)
Explain difference between AJMP, 5JMP, LJMP instructions of 8051 microcontroller.
5 M
1 (c)
Write program to 8255 PPI to read data from CL and transfer it to Port CU.
5 M
1 (d)
Describe features of ARM controller.
5 M
2 (a)
Draw and explain Timing 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, 1 stop bit.
10 M
4 (a)
Explain addressing modes of ARM controller with examples.
10 M
4 (b)
Write a program to generate square wave with pulse width of 100 as using 8155. Assume clock frequency is 3MHz.
10 M
5 (a)
Interface 16KB EPROM using 8KB chip and 8KB RAM using 4KB chip. Use absolute decoding.
10 M
5 (b)
Explain interrupt structure of 8051 microcontroller and related SFRs.
10 M
6 (a)
Explain instruction DAA of 8085 with an example what are the contents of Reg A after following Program executed: [ egin {align*} 6000:& MVI A, 11 H \ & MVI B, 22 H \ & LXI H, 600 C \ & CALL ADDs \ &INR A \ &HLT \ ADDs: & XTHL \ & ADDB \ &RET end{align*} ]
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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