STUPIDSID
Solve any one question from Q.1(a,b,c) &Q.2(a,b,c)
1(a)
Implement the expression using a 8:1 multiplexer \[f(a, b, c, d)=\sum m(0, 2, 3, 6, 8, 9, 12, 14).\]
4 M
1(b)
What is the difference between combinational and sequential circuits?
2 M
1(c)
Simply the following logic function using the Quine -McCluskey minimization technique: \[Y(A, B, C, D)=\sum m(0, 1, 3, 7, 8, 9, 11, 15)\]
6 M
2(a)
Explaiin in detail look ahead carry generator
6 M
2(b)
Design Mod-24 counter using 7490
2 M
2(c)
Design a sequence detector using MS J-K flip-flop sequence is 1101.
4 M
Solve any one question from Q.3(a,b,c) & Q.4(a,b)
3(a)
Draw ASM chart for 2-bit UP counter using multiplexer controller method.
8 M
3(b)
List any two medeling style of VHDL
2 M
3(c)
Compare concurrent and sequential statement in VHDL
2 M
4(a)
Design 4 input and 6 output combinational circuit using PLA. The input variables are A,B, C and D:
Y1 = ∑m(0, 3, 5, 6, 9, 10, 12, 15)
Y2 = ∑m(0, 1, 2, 3, 11, 12, 14, 15)
Y3 = ∑m(0, 4, 8, 12)
Y4 = &summ (0, 2, 3, 5, 7, 8, 12, 13)
Y5 = ∑m(0, 1, 3, 4, 5, 6, 11, 13, 14, 15)
Y5 = ∑m (1, 2, 6, 8, 15).
Y1 = ∑m(0, 3, 5, 6, 9, 10, 12, 15)
Y2 = ∑m(0, 1, 2, 3, 11, 12, 14, 15)
Y3 = ∑m(0, 4, 8, 12)
Y4 = &summ (0, 2, 3, 5, 7, 8, 12, 13)
Y5 = ∑m(0, 1, 3, 4, 5, 6, 11, 13, 14, 15)
Y5 = ∑m (1, 2, 6, 8, 15).
6 M
4(b)
Draw block diagram of PLA device and explain.
6 M
Solve any one question from Q.5(a,b,c) & Q.6(a,b)
5(a)
Explain characteristics of digital Ics (any four).
4 M
5(b)
Explain operation of TTL NAND gate.
6 M
5(c)
Explain TTL open collector.
3 M
6(a)
What is addressing mode? Identify and Justify addressing modes of the following 8051 instructions:
i) MOVX A, @DPTR
ii) MOVC A, @ A+PC
iii) ADD A, #10
iv) MOV DPTR, #2550.
i) MOVX A, @DPTR
ii) MOVC A, @ A+PC
iii) ADD A, #10
iv) MOV DPTR, #2550.
6 M
6(b)
What is microcontroller? Distinguish between microcontroller and microprocessor.
7 M
Solve any one question from Q.7(a,b,c) &Q.8(a,b)
7(a)
Explain CMOS inverter.
4 M
7(b)
Why wired logic is not possible in CMOS operation.
4 M
7(c)
Explain trisate logic.
5 M
8(a)
Explain the physical structure and significances of all I/O ports of 8051 microcontroller.
7 M
8(b)
Give significance of the following pins in 8051:
i) PSEN#
ii) EA#/ VPP
iii) ALE
iv) TxD
v) INTO#
vi) RST.
i) PSEN#
ii) EA#/ VPP
iii) ALE
iv) TxD
v) INTO#
vi) RST.
6 M
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