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).
Answer: A
No Explanation.
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A 4 bit down counter can count from
Answer: B
It can count from 15 to 0 or 1111 to 0000.
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Assertion (A): TTL is a very popular logic in SSI and MSI category.
Reason (R): In Schottky TTL the power dissipation is less than in ordinary TTL.
Answer: C
In Schottky TTL storage time is reduced.
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An 8 bit transistor register has output voltage of low-high-low-high-low-high-low-high. The decimal number stored is
Answer: C
01010101 in binary and 64 + 16 + 4 + 1 = 85 in decimal.
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The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is
Answer: B
The largest negative number is 1000 0000 = -128.
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Assertion (A): Tristate logic is used for bus oriented systems
Reason (R): The outputs of a tristate logic are 0, 1 and indeterminant.
Answer: C
Outputs of tristate logic are 0, 1 and high impedance state.
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A 2 bit BCD D/A converter is a weighted resistor type with ER = 1V, R = 1 MΩ and Rf = 10KΩ then Resolution in percent and volt is __________ .
Answer: D
No Explanation.
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A multilevel decoder is more costly as compared to single level decoder.
Answer: A
A multi level decoder may be cheaper than single level decoder.
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A 3 input NAND gate is to be used as inverter. Which of the following will give better results?
Answer: C
Unused inputs should be given high input.
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In which counter does the maximum frequency depend on the modulus?
Answer: B
Since propagation delays of all flip-flops are added in ripple counter, the maximum frequency depends on the number of flip-flops which depends on modulus.
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