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A researcher wants an alarm to sound whe...

A researcher wants an alarm to sound when the temperature of air in his controlled research chamber rises above `40^@C` or falls below `20^@C`.The alarm can be triggered by the output of

A

AND gate

B

NAND gate

C

NOT gate

D

OR gate

Text Solution

Verified by Experts

The correct Answer is:
D
Because `Y=A+B` (OR gate )
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ERRORLESS-ELECTRONICS-NCERT Based Questions (Digital Electronics)
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  2. The given figure shows the wave forms for two inputs A and B and that ...

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  3. A researcher wants an alarm to sound when the temperature of air in hi...

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  4. The figure shows a logic circuit with two inputs A and B and the outpu...

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  5. The combination of gates shown below produces

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  6. In the following circuit, the output Y for all possible inputs A and B...

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  7. Digital circuit can be made by repetitive use of

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  8. Identify the operation performed by the circuit given below

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  9. For the given combination of gates, if the logic states of inputs A,B,...

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  10. The circuit diagram (see fig.) shows a 'logic combination' with the st...

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  11. Figure gives a system of logic gates. From the study of truth table it...

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  12. The diagram of a logic circuit is given below. The output F of the cir...

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  13. In circuit in following fig. the value of Y is

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  14. Truth table for the given circuit is

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  15. The given truth table is

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  16. The truth table for the following logic circuit is

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  17. The following configuration of gate is equivalent to

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  18. Sum of the two binary numbers (100010)(2) and (11011)(2) is

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  19. The decimal equivalent of the binary number (11010.101)(2) is

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  20. v34

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