The circuit diagram shows a combination of logic gates. When inputs $P$ and $Q$ change to state $0$ with inputs $R$ and $S$ still at state $1$,the states of outputs $X$,$Y$ and $Z$ change to:

The diagram of a logic circuit is given below. Find the output of the circuit.

In the given circuit as shown,two input waveforms $A$ and $B$ are applied simultaneously. The resultant waveform $Y$ is:

Two logic gates are connected as shown in the figure. If the inputs are $A=1$ and $B=0$, then the values of $y_1$ and $y_2$ respectively are

$A$ typical integrated circuit $(IC)$ consisting of logic gates $\leq 1000$ is termed as

Consider the following statements regarding digital signals:
$(i)$ provide a continuous set of values
(ii) represent values as discrete steps
(iii) can utilise binary system
(iv) are in the form of rectangular waves
Then the true statements are: