Q. Assertion (A): Gate triggering is the most commonly used method for triggering of an SCR.

Reason (R): Even a small gate current is sufficient to turn on an SCR.

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Q. A device which converts BCD to seven segment is called

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Q. In 2's complement representation the number 11100101 represents the decimal number

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Q. A decade counter skips

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Q. 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

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Q. A ring counter with 5 flip flops will have

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Q. The number of distinct Boolean expression of 4 variables is

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Q. 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).

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Q. A memory system of size 16 k bytes is to be designed using memory chips which have 12 address lines and 4 data lines each. The number of such chips required to design the memory system is

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Q. In a 7 segment display, LEDs b and c lit up. The decimal number displayed is

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Q. A 12 bit ADC is used to convert analog voltage of 0 to 10 V into digital. The resolution is

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Q. A full adder can be made out of

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Q. The output of a half adder is

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Q. In the expression A + BC, the total number of minterms will be

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Q. Which of the following is non-saturating?

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Q. The number of digits in octal system is

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Q. Minimum number of 2-input NAND gates required to implement the function F = (x̅ + y̅) (Z + W) is

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Q. Which device has one input and many outputs?

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Q. A carry look ahead adder is frequently used for addition because

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Q. In register index addressing mode the effective address is given by

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