57101. The K-map for a Boolean function is shown in figure. The number of essential prime implicants for this function is
57102. When microprocessor processes both positive and negative numbers, the representation used is
57103. An AND gate has four inputs. One of the inputs is low and other inputs are high. The output
57104. In the given figure, the flip flop is
57105. The number of switching functions of 3 variables are
57106. The applications of shift registers are Time delayRing counterSerial to parallel data conversionSerial to serial data conversion Which of the above are correct?
57107. Assertion (A): ECL is fast as compared to TTL.Reason (R): ECL dissipates less power than TTL.
57108. Assertion (A): Synchronous counter has higher speed of operation than ripple counter Reason (R): Synchronous counter uses high speed flip flops.
57109. What will be the maximum conversion time in 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).
57110. The modulus of counter in the given figure is
57111. The input to a parity detector is 1001. The output is
57112. 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
57113. As the number of flip flops are increased, the total propagation delay of
57114. In a 4 input OR gate, the total number of High outputs for the 16 input states are
57115. 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 __________
57116. If A is 1011, A" is
57117. Which of the following is not a characteristic of a flip flop?
57118. The number of flip flops needed for a Mod 7 counter are
57119. For AB + A C + BC = AB + A C the dual form is
57120. A DAC has full scale output of 5 V. If accuracy is ± 0.2% the maximum error for an output of 1 V is
57121. Binary number 1101101101 is equal to decimal number
57122. A 16:1 multiplexer has 4 select input lines.
57123. Which one of the following can be used as parallel to series converter?
57124. 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.?
57125. A 4 bit down counter can count from
57126. Assertion (A): In computers the data is stored in hexadecimal formReason (R): Hexadecimal representation is short as compared to binary representation.
57127. For the circuit of the given figure, the output equation is
57128. Using 2's complement, the largest positive and negative number which can be stored with 8 bits are
57129. Three Mod-16 counters are connected in cascade. The maximum counting range is
57130. TTL is used in electronic calculators.
57131. Inverter 74 LS04 has following specifications I0H max = - 0.4 mA, I0L max = 8 mA, IIH max = 20 μA, IIL max = 0.1 mA
The fan out of this inverter is
57132. A 4 bit ripple counter starts in 0000 state. When the counter reads 0010 the number of clock pulses which have occurred is
57133. The number FF in hexadecimal system is equivalent to number __________ in decimal system.
57134. The inputs A, B, C of the given figure are applied to a 3 input NOR gate. The output is
57135. Assertion (A): XOR gate is not universal gate.Reason (R): It is not possible to realize any Boolean function using XOR gates only.
57136. The number of logic devices required in a Mod-16 synchronous counter are
57137. 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 __________ .
57138. The number of bits in EBCDIC is
57139. The number of memory locations in which 14 address bits can access is
57140. 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
57141. 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.
57142. What will be output for decimal input 82?
57143. The circuit of the given figure gives the output Y =
57144. In a 4 bit ripple counter using flip flops with tpd = 40 ns, the maximum frequency can be
57145. 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
57146. The number of product terms in the minimized sum of product expression obtained through the following K-map, where d, don't care.
57147. BCD equivalent of - 810 is
57148. The number of inputs and outputs in a full adder are