Q. Program counter in a digital computer

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Q. Which material is generally used for LED?

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Q. The number of bits in a nibble is

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Q. When all the seven segments of a display are energized, the number shown is

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Q. In digital computer programming, subroutines are used

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Q. If the switch is thrown to the START position, Q and Y will be equal to

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Q. The hexadecimal number system is

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Q. Mark the false statement:

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Q. The 54/74164 chip is an 8-bit serial-input-parallel-output shift register. The clock is 1 MHz. The time needed to shift a 8-bit binary number into the chip is

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Q. The code which provides for parity check is

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Q. The address to which a software or hardware restart branches is known as

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Q. Which device uses Pneumatic fluid?

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Q. Assertion (A): Decoder is not a combinational circuit.

Reason (R): Every memory element of semi conductor form has a decoder.

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Q. In 8085 microprocessor, in order to enable RST 5.5, RST 6.5 and RST 7.5 interrupts, which of the following instruction are needed?

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Q. A retriggerable one shot is one which

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Q. A(A̅ + B) =

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Q. Consider the Boolean expression X = ABCD + AB̅CD + A̅BCD + A̅CB̅D The simplified form of X is

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Q. In floating point representation the number of bits in exponent is

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Q. Consider the following statements:

1. In the 2's complement representation, negative numbers are stored in sign magnitude form.
2. Taking 2's complement is equivalent to sign change.
3. In a 4 bit complement representation of a binary number A.
4. In the 2's complement representation the most significant bit (MSB) is zero for a positive number.

Of these, the only true statements are

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Q. Without any addition circuitry, an 8:1 MUX can be used to obtain.

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