List of top Digital Electronics Questions

The input-output characteristics of a Schmitt trigger

The resolution for n-bit system D/A Converter is__

If ⊕ and ⊙ denote the exclusive OR and exclusive NOR operations, respectively, then which one of the following is not correct?

A 32:1 MUX can can be designed using:

Which of the following interrupts is non-maskable in 8085 microprocessor?

Which processor provide 1 MB memory

The numbers of 1^s in Binary representation of (3× 4096 + 12×256+ 5x16+3) are

The decimal number equivalent of (4057.06)₈ is

What is the maximum number of different Boolean function involving n Boolean variables?

The stack pointer in a microprocessor is a

In the circuit shown, the switch is initially closed. It is opened at \( t = 0 \, \text{s} \) and remains open thereafter. The time (in milliseconds) at which the output voltage \( V_{\text{out}} \) becomes LOW is _________ (round off to three decimal places).

The digital circuit shown _________

A = \( a_1a_0 \) and B = \( b_1b_0 \) are two 2-bit unsigned binary numbers. If \( F(a_1, a_0, b_1, b_0) \) is a Boolean function such that \( F = 1 \) only when \( A>B \), and \( F = 0 \) otherwise, then \( F \) can be minimized to the form _________

The logic block shown has an output \( F \) given by _________

The output F of the digital circuit shown can be written in the form _________

A Boolean function \( F \) of three variables \( X \), \( Y \), and \( Z \) is given as \[ F(X, Y, Z) = (X' + Y + Z) \cdot (X + Y' + Z') \cdot (X' + Y + Z') \cdot (X' Y' Z' + X Y Z') \] Which one of the following is true?

Given below is the diagram of a synchronous sequential circuit with one J-K flip-flop and one T flip-flop with their outputs denoted as A and B respectively, with \( J_A = (A' + B') \), \( K_A = (A + B) \), and \( T_B = A \). Starting from the initial state \( AB = 00 \), the sequence of states \( (AB) \) visited by the circuit is

A 4 \(\times\) 1 multiplexer with two selector lines is used to realize a Boolean function \( F \) having four Boolean variables X, Y, Z and W as shown below. \( S_0 \) and \( S_1 \) denote the least significant bit (LSB) and most significant bit (MSB) of the selector lines of the multiplexer respectively. \( I_0, I_1, I_2, I_3 \) are the input lines of the multiplexer.

The canonical sum of product representation of F is

A 10-bit ADC has a full-scale of 10.230 V, when the digital output is \( (11 \, 1111 \, 1111)_2 \). The quantization error of the ADC in millivolt is \(\underline{\hspace{2cm}}\).

A 16-bit microprocessor has twenty address lines (A0 to A19) and 16 data lines. The higher eight significant lines of the data bus of the processor are tied to the 8-data lines of a 16 Kbyte memory that can store one byte in each of its 16K address locations. The memory chip should map onto contiguous memory locations and occupy only 16 Kbyte of memory space. Which of the following statement(s) is/are correct with respect to the above design?

For a 4-bit Flash type Analog to Digital Converter (ADC) with full scale input voltage range "V", which of the following statement(s) is/are true?

The content of the registers are \( R_1 = 25H \), \( R_2 = 30H \), and \( R_3 = 40H \). The following machine instructions are executed.

After execution, the content of registers \( R_1 \), \( R_2 \), \( R_3 \) are

int main () {
double a [2]={20.0.25.0},_*p,_*q,
p=a;
q=p+1
printf (%d, %d, (int) (q-p))
int(_*-q-_*p);