In a BCD to 7 segment decoder the minimum and maximum number of outputs active a

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Question
In a BCD to 7 segment decoder the minimum and maximum number of outputs active at any time is
Options
A. 2 and 7
B. 3 and 7
C. 1 and 6
D. 3 and 6

Correct Answer

2 and 7

Explanation

Minimum number of outputs when input is decimal 1 and maximum number of outputs when input is decimal 8.

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3. BCD input 1000 is fed to a 7 segment display through a BCD to 7 segment decoder/driver. The segments which will lit up are
Options
A. a, b, d
B. a, b, c
C. all
D. a, b, g, c, d

5. A 12 bit ADC is used to convert analog voltage of 0 to 10 V into digital. The resolution is
Options
A. 2.44 mV
B. 24.4 mV
C. 1.2 V
D. none of the above

8. A three state switch has three outputs. These are
Options
A. low, low and high
B. low, high, high
C. low. floating, low
D. low, high, floating

9. The circuit of the given figure realizes the function
Options
A. Y = (A + B) C + DE
B. Y = A + B + C + D + E
C. AB + C +DE
D. AB + C(D + E)

10. In register index addressing mode the effective address is given by
Options
A. index register value
B. sum of the index register value and the operand
C. operand
D. difference of the index register value and the operand

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