EB74SC00 QUAD 2-INPUT NAND GATE
Unfortunately, our chief training engineer is currently recuperating in
Elbonia General Hospital after slipping in the mud outside the front
door, so we won't be able to bring you the lesson scheduled for today.
However, you should be able to complete the next few tasks using what
you already know plus a bit of logical thinking. There are also some
Wikipedia articles that you may find helpful.
NAND Gates
The output of a NAND gate goes low when all of its inputs are high. If any input is low, the output is high.