In the expression A + BC, the total number of minterms will be 2 3 4 5 The min t

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Question
In the expression A + BC, the total number of minterms will be
Options
A. 2
B. 3
C. 4
D. 5

Correct Answer

5

Explanation

The min terms are ABC + ABC + AB C + ABC + ABC.

Digital Electronics problems

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2. A JK flip flop has t_pd= 12 ns. The largest modulus of a ripple counter using these flip flops and operating at 10 MHz is
Options
A. 16
B. 64
C. 128
D. 256

4. The fixed count that should be used so that the output register will represent the input for a 6 bit dual slope A/D converter uses a reference of -6v and a 1 MHz clock. It uses a fixed count of 40 (101000).
Options
A. 000110
B. 0010
C. 1111
D. 011101

5. An AND gate has two inputs A and B and one inhibit input 3, Output is 1 if
Options
A. A = 1, B = 1, S = 1
B. A = 1, B = 1, S = 0
C. A = 1, B = 0, S = 1
D. A = 1, B = 0, S = 0

6. A carry look ahead adder is frequently used for addition because
Options
A. it costs less
B. it is faster
C. it is more accurate
D. is uses fewer gates

8. Minimum number of 2-input NAND gates required to implement the function F = (x + y) (Z + W) is
Options
A. 3
B. 4
C. 5
D. 6

9. The basic storage element in a digital system is
Options
A. flip flop
B. counter
C. multiplexer
D. encoder

10. A counter type A/D converter contains a 4 bit binary ladder and a counter driven by a 2 MHz clock. Then conversion time
Options
A. 8 ? sec
B. 10 ? sec
C. 2 ? sec
D. 5 ? sec

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