Q. Assertion (A): The access time of memory is lowest in the case of DRAM

Reason (R): DRAM uses refreshing cycle.

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Q. In a 3 input NOR gate, the number of states in which output is 1 equals

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Q. Assertion (A): Even if TTL gates and CMOS gates used in a realization have the same power supply of + 5 V, suitable circuit is needed to interconnect them

Reason (R): VOH, VOL, VIH and VIL of a TTL gave are respectively 2.4, 0.4, 2 and 0.8 V respectively. If supply voltage is + 5 V. VIL and VIH for CMOS gate for the supply voltage of + 5 V are 1.5 V and 3.5 V respectively.

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Q. The series 54 H/74 H denotes

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Q. For a 4096 x 8 EPROM, the number of address lines is

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Q. Assertion (A): A PROM can be used as a synchronous counter

Reason (R): Each memory location in a PROM can be read synchronously.

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Q. A̅ B̅ C̅ D̅ + (A̅B̅) C D̅ =

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Q. Find the output voltage for 011100 in a 6 bit R-2R ladder D/A converter has a reference voltage of 6.5 V.

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Q. Binary number 1101 is equal to octal number

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Q. The complement of exclusive OR function is

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Q. Decimal -90 equals __________ in 8 bit 2s complement

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Q. 23.6₁₀ = __________ ₂

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Q. In a shift left register, shifting a bit by one bit means

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Q. A multiple emitter transistor has many emitters and collectors.

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Q. A mode-10 counter can divide the clock frequency by a factor of

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Q. Which of the following binary numbers is equivalent to decimal 10?

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Q. A 4 bit synchronous counter has flip flops having propagation delay of 50 ns each and AND gates having propagation delay of 20 ns each. The maximum frequency of clock pulses can be

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Q. A counter has 4 flip flops. It divides the input frequency by

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Q. Out of 5 M x 8, 1 M x 16, 2 M x 16 and 3M x 8 memories, which memory can store more bits?

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Q. A 6 bit ladder A/D converter has input 101001. The output is (assume 0 = 0 V and 1 = 10 V)

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