Class 25 (120 points) 1. (50 points) In the circuit below, two NAND gates are used to construct a latch. (Notice that the basic latch presented in Class 25 uses two NOR gates.) Describe what the circuit below does when: (a) R=0,S=0; (b) R=0,S=1; (c) R=1,S=0; (d) R 1, S- T AN 5 NANDE OUTPUT INPUT Hint: You may want to use Boolean algebra to transform this latch into the basic latch presented in Class 25 (constructed using NOR gates)