Digital Electro...

If the solutions to the quadratic equation x² – 11x + 22 are x = 3 and x = 6, than the base of numbers is

The minimum number of NAND gate required to implement the logic function given by  is

A delay line circuit is to be generated to create a delay of 0.32 ms between input and output. The number of flip-flops required in SISO register to produce the required delay?

Consider the following logic circuit: What is the required input condition (A, B, C) to make the output X = 1, for the above logic circuit

The code where all successive numbers differ from their preceding number by single bit is __________

Which of the following logic gate follow both commutative and associate law?

What is a Latch?

In a dual slope ADC, the reference voltage is 100 mV and the first integration period is set as 50 msec. The input resistor of the integrator is 1 kΩ and the integrating capacitor 0.047 μF. For an input voltage of 120 mV, the second integration (de-integration) period will be

The number of 1’s in the 8-bit representation of -127 in 2’s complement form is m and that in 1’s complement form is n. What is the value of m : n?

Consider the following Boolean expression:

\(\left( {\bar A + \bar B} \right)\left[ {\overline {A\left( {B + C} \right)} } \right] + A\left( {\bar B + \bar C} \right)\)

In an 8085 microprocessor, the accumulator contents are AA H. After executing the instruction “CPI99” in the microprocessor

Consider the following program for 8085

XRA A

LXI B, 0007H

\(\begin{array}{*{20}{c}} {{\rm{Loop}}:}&{{\rm{DCX\;B}}}\\ \;&{{\rm{JNZ\;Loop}}} \end{array}\)

Consider numbers represented in 4-bit gray code. Let h₃h₂h₁h₀ be the gray code representation of a number n and let g₃g₂g₁g₀ be the gray code of ((n + 1) modulo 16) value of the number.

Which one of the following functions is correct?

For the logic diagram shown below, the output f is

The number of two input NAND gate required to implement an OR gate and an EX-NOR gate are respectively

Three set of simultaneous equations are given by

The solution of the above three set of simultaneous equations will be

If one of the input to an EX-NOR gate is fixed to logic ‘1’, then output of this gate will be

An AND gate

A certain 8-bit DAC has a full scale output of 2mA and full scale error of ± 0.5 % full scale reading. The maximum possible output current for an input of 10000000 is__________ μA.

An XOR gate produces output 1 only when two inputs are

Consider the truth table shown below:

The logic gate represented by the above truth table is

The output of a logic gate is ‘0’ when both its inputs are different. The gate is

A circuit has three inputs and one output. The output is 1 if at least two of the three input variables are 1, otherwise it is zero. The minimum number of basic gates required to implement the output (Y) are

A ROM is interfaced to an 8085 CPU as indicated in figure. The address range occupied by the ROM is

The boolean expression for the output f of the digital circuit shown below is