Q. Binary multiplication can be done by repeated addition.

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Q. Assertion (A): In totem pole output the output impedance is low.

Reason (R): TTL gate with active pull up should not be used in wired AND connection.

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Q. The counter which require maximum number of FF for a given mod counter is

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Q. The content of which of the following determines the state of the CPU at the end of the execute cycle (when the interrupt is recognized)?

1. Program counter
2. Processor register
3. Certain status conditions

Select the correct answer using the codes given below :

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Q. In a gate output is Low if and only if all inputs are High. The gate is

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Q. With on-chip decoding, n address lines can access

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Q. A half adder can be used only for adding

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Q. In the 8421 BCD code, the decimal number 125, is written as

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Q. 110.11₂ x 110₂ = __________ ₁₀

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Q. Y = A + A̅ B is the same as

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Q. Assertion (A): Different symbols are used for different gates

Reason (R): IEEE symbols are the same as traditional symbols for gates.

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Q. If an analog voltage is expressed in binary using 4 bits, each successive binary count would represent

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Q. In a 4 input AND gate, the total number of High outputs for 16 input states are

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Q. Symmetrical square wave of time period 100 μs can be obtained from square wave of time period 10 μs by using

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Q. The initial state of a Mod-16 counter is 0110. After 37 clock pulses the state of counter will be

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Q. In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require

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Q. A digital system is required to amplify a binary encoded audio signal. The user should be able to control the gain of the amplifier from a minimum to a maximum in 100 increments. The minimum number of bits required to encode, in straight binary is,

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Q. A 4 bit transistor register has output voltage of high-low-high-low. The binary number stored and its decimal equivalent are

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Q. Assertion (A): A demultiplexer cannot be used as a decoder

Reason (R): A multiplexer selects one of many outputs whereas a decoder selects on output corresponding to coded input.

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Q. Hexadecimal number F is called to octal number

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