Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


Solve any one question from Q.1(a,b) &Q.2(a,b)
1(a) Design 3-bit binary to gray code converter.
6 M
1(b) Design MOD-6 synchronous counter using Toggle FF ( T FF).
6 M

2(a) Design 3-bit parity generator for even parity bit.
6 M
2(b) Convert SR FF to JK FF.
6 M

Solve any one question from Q.3(a,b) &Q.4(a,b)
3(a) Design a sequential circuit for the given state diagram using delay flip-flop (D FF)
!mage
6 M
3(b) Draw and explain working of two input TTL NAND gate and list advantages of totem pole output stage.
6 M

4(a) Design mealy type sequence detector of detect a serial input sequence of 1101 using Delay FF (D-FF).
6 M
4(b) Draw and explain two input CMOS NAND gate.
6 M

Solve any one question from Q.5(a,b,c) &Q.6(a,b,c)
5(a) Implement the following functions using PLA:
\[F_{1}=\sum m(0, 2, 5, 7)\\ F_{2}=\sum m(2, 3, 4, 5)\]
6 M
5(b) Compare PROM, PLA and PAL.
4 M
5(c) Classify memories on the basis of principle of operation.
3 M

6(a) Draw circuit of one cell of static RAM and explain its working.
6 M
6(b) Draw and explain architecture of PLA.
4 M
6(c) Explain how will you expand memory capacity (word size).
3 M

Solve any three question from Q.7(a) (i, ii, iii, iv)Solve any one question from Q.7(a,b,c) &Q.8(a,b
7(a)(i) Explain the following pins of 8051 :
PSEN (active low )
2 M
7(a)(ii) EA (active low)
2 M
7(a)(iii) ALE
2 M
7(a)(iv) RST
2 M
7(b) Explain any four multi-function pins of port-3 of 8051.
4 M
7(c) List out features of 8051.
3 M

Solve any three question from Q.8(a)(i,ii, iii, iv)
8(a)(i) Explain the following instructions with example:
MOVX A, @DPTR
2 M
8(a)(ii) ADDC A,B
2 M
8(a)(iii) MUL AB
2 M
8(a)(iv) RETI.
2 M
8(b) Draw and explain block diagram of 8051 in detail.
4 M
8(c) Write a program for 8-bit multiplication of binary numbers.
3 M



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