Using two pnp BJTs and resistors as needed, design a circuit to implement a two-input NAND gate, that is, a circuit that gives a low output only when both inputs are high; for all other input...

Using two pnp BJTs and resistors as needed, design a circuit to implement a two-input NAND gate, that is, a circuit that gives a low output only when both inputs are high; for all other input combinations, the output is always high. Assume a 5-V power supply. Hint: read and 2.40 to fi nd ideas both about your circuit’s topology and a method to analyze it.