Digital techniques__ 2 marks questions.

a) Convert the following hexadecimal number to decimal number

(i) (EF)16

(ii) (DAD)16

b) Convert the following decimal number to octal.

(i) (28)10

(ii) (62)10

c) Draw the symbol of EX-OR and EX-NOR gate along with

its logical equation

d) Draw symbol of AND gate and write its truth table.

e) Draw the symbol of D-FlipFlop and T-FlipFlop.

f) Define Bidirectional Shift Register and Universal Shift Register.

g) State different triggering methods in digital circuits.

h) State DeMorgan’s theorems.

i) Convert the following:

(i) (111011)2 = ( ? ) gray code

(ii) (46)10 = ( ? ) excess-3 code

j) What is Modulus of counter? How many FlipFlops are required for MOD-11 counter.

k) Implement given logical equation using gates Y = AB+C

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Digital Techniques_end of digital notes

End of Digital Techniques Notes and Questions.

Digital Techniques_Descriptive Questions

Descriptive Questions 1)Construct full adder circuit using K map. 2) Justify ‘NOR gate is called as universal gate’. Sketch relevant diagram. 3) Convert following Boolean equation to standard SOP form and implement using NAND-NAND logic. (i) y = A B C + ABC D + A C D (ii) y = PQ + PQR + PQ R 4)State the rules for BCD addition. 5)Draw two input OR gate, using ECL logic family (only diagram). 6)Realize full subtractor using K-map. 7)Describe positive and negative edge triggering methods of clock with their logic symbol. 8)Calculate the analog output of 4-bit DAC if the digital input is 1101. Assume VFS = 5V. 9)Draw the logic diagram of 4-bit SIPO shift register and explain its working principle. 10) Realize the following expression using K-map. Y = f(A, B, C, D) = Σ m(0, 2, 3, 5, 6, 7, 10, 11) + d (8, 14, 15) and implement it. 11)Simplify the following expression using Boolean laws. Y = (A + B) (A + C) Y = ABC + ABC + ABC 12)Draw the circuit of master slave JK FF using NAND gate and...

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