The circuit in the given figure is positive logic OR gate negative logic OR gate

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Correct Answer

negative logic OR gate

Explanation

Since V(1) is lower state than V(0) it is a negative logic circuit. Since diodes are in parallel, it is an OR gate.

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2. 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

4. 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

5. A device which converts BCD to seven segment is called
Options
A. encoder
B. decoder
C. multiplexer
D. none of these

6. 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

9. 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

10. 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)

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