PYQs Based Test - 07 : Digital Electronics

Assume that all the digital gates in the circuit shown in the figure are ideal, the resistor R = 10 kΩ, and the supply voltage is 5 V. The D flip-flops D1, D2, D3, D4, and D5 are initialized with logic values 0, 1, 0, 1, and 0 respectively. The clock has a 30% duty cycle.



The average power dissipated (in mW) in the resistor R is ________

The logic function f(X,Y) realized by the given circuit is

In the circuit shown, what are the values of F for EN = 0 and EN = 1, respectively?

A 2 × 2 ROM array is built with the help of diodes as shown in the circuit below. Here W0 and W1 are signals that select the word lines and B0 and B1 are signals that are output of the sense amps based on the stored data corresponding to the bit lines during the read operation.



During the read operation, the selected word line goes high and the other word line is in a high impedance state. As per the implementation shown in the circuit diagram above, what are the bits corresponding to Dᵢⱼ (where i = 0 or 1 and j = 0 or 1) stored in the ROM?

If X and Y are inputs and the Difference (D = X – Y) and the Borrow (B) are the outputs, which one of the following diagrams implements a half-subtractor?