Q/What are the uses of logic gates?

(b) For the following circuits, (i) Write down the logic statement (ii) write down the truth table A

12) Study the ladder logic program in the figure below and answer the questions that follow: a. What is the purpose of interconnecting the two timers? b. How much time must elapse before output PL is energized? c. What two conditions must be satisfied for timer T4:2 to start timing? d. Assume that output PL is on and power to the system is lost. When power is restored, what will the status of this output be? e. When input PB2 is on, what will happen? f. When input PB1 is on, how much accumulate. Ladder logic program Output PB2 L2 T4:1 (RES Inputs L1 T4:2 (RES PB1 PL PB2 -RTO PB1 RETENTIVE TIMER ON T4:1 EN 1.0 2900 CON) Timer Time base Preset Accumulated -RTO PB1 T4:1 RETENTIVE TIMER ON Timer Time base T4:2 (EN) 1.0 DN Preset 1780 ON) Accumulated T4:2 PL HE DN

What logic function is performed by this circuit? VDD a. O d. e. A b. None OC AB AB A+B A+B O f. B AB M₁ M₂ M3 M4 F M5