70551. The input to a parity detector is 1001. The output is
70552. A 4 bit modulo 16 ripple counter uses JK flip-flops. If the propagation delay of each FF is 50 ns. The max. clock frequency that can be used is equal to
70553. As the number of flip flops are increased, the total propagation delay of
70554. In a 4 input OR gate, the total number of High outputs for the 16 input states are
70555. For the ring oscillator shown in the figure, the propagation delay of each inverter is 100 pico sec. What is the fundamental frequency of the oscillator output __________
70556. If A is 1011, A" is
70557. Which of the following is not a characteristic of a flip flop?
70558. The number of flip flops needed for a Mod 7 counter are
70559. For AB + A C + BC = AB + A C the dual form is
70560. A DAC has full scale output of 5 V. If accuracy is ± 0.2% the maximum error for an output of 1 V is
70561. Binary number 1101101101 is equal to decimal number
70562. A 16:1 multiplexer has 4 select input lines.
70563. Which one of the following can be used as parallel to series converter?
70564. What will be conversion time of a successive approximation A/D converter which uses 2 MHz clock and 5 bit binary ladder containing 8 V reference.?
70565. A 4 bit down counter can count from
70566. Assertion (A): In computers the data is stored in hexadecimal formReason (R): Hexadecimal representation is short as compared to binary representation.
70567. For the circuit of the given figure, the output equation is
70568. Using 2's complement, the largest positive and negative number which can be stored with 8 bits are
70569. Three Mod-16 counters are connected in cascade. The maximum counting range is
70570. TTL is used in electronic calculators.
70571. Inverter 74 LS04 has following specifications I0H max = - 0.4 mA, I0L max = 8 mA, IIH max = 20 μA, IIL max = 0.1 mAThe fan out of this inverter is
70572. A 4 bit ripple counter starts in 0000 state. When the counter reads 0010 the number of clock pulses which have occurred is
70573. The number FF in hexadecimal system is equivalent to number __________ in decimal system.
70574. The inputs A, B, C of the given figure are applied to a 3 input NOR gate. The output is
70575. Assertion (A): XOR gate is not universal gate.Reason (R): It is not possible to realize any Boolean function using XOR gates only.
70576. The number of logic devices required in a Mod-16 synchronous counter are
70577. 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 __________ .
70578. The number of bits in EBCDIC is
70579. The number of memory locations in which 14 address bits can access is
70580. What will be conversion rate for a counter type A/D converter contains a 4 bit binary ladder and a counter driven by a 2 MHz clock. Then conversion time
70581. A 6 bit R-2R ladder D/A converter has a reference voltage of 6.5 V. It meets standard linearity then resolution in percent and volts.
70582. What will be output for decimal input 82?
70583. The circuit of the given figure gives the output Y =
70584. In a 4 bit ripple counter using flip flops with tpd = 40 ns, the maximum frequency can be
70585. What will be FSV in 2 bit BCD D/A converter is a weighted resistor type with ER = 1V, R = 1 MΩ and Rf = 10KΩ
70586. The number of product terms in the minimized sum of product expression obtained through the following K-map, where d, don't care.
70587. BCD equivalent of - 810 is
70588. The number of inputs and outputs in a full adder are
70589. A + A . B =
70590. The device 'one shot' has
70591. For the logic circuit of the given figure the simplified Boolean expression is
70592. If number of information bits is 4, the parity bits in Hamming code are located at bit positions __________ from the LSB.
70593. A certain JK FF has tpd = 12 n sec the largest MOD counter that can be constructed from these FF and still operate up to 10 MHz is
70594. Two 2's complement number having sign bits X and Y are added and the sign bit of the result is Z. then, the occurrence of overflow is indicated by the Boolean function.
70595. If A = 0101, then A' is
70596. 11011 in gray code = __________ .
70597. In the circuit of the given figure, Y =
70598. A . 0 =
70599. The complement of exclusive OR function is
70600. Decimal -90 equals __________ in 8 bit 2s complement
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