3. The following diagram shows the wiring of a Fairchild 7400, which is a typical quad- nand-gate array. Connection Diagram Use the smallest required number of these chips, and draw in pin connections implement the function f- Tb+ab To do this problem you will implement f using only nand-gates (ask me how to do this). Turn in your circuit diagram, and the pin wiring diagram. 4. Draw a transistor schematic of the function from Exercise 3. Use the original definition, not your NAND implementation