A digital designer found a problem in a certain circuit’s function after the circuit had b...

A digital designer found a problem in a certain circuit’s function after the circuit had been released to production and 1000 copies of it built. A portion of the circuit is shown in Figure in black; all of the gates are 74HCT00 NAND gates. The digital designer fixed the problem by adding the two diodes shown in color. What do the diodes do? Describe both the logical effects of this change on the circuit’s function and the electrical effects on the circuit’s noise margins.