# 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.

## Editing Facilites

Just in case you haven't already discovered this, you can use the Selection tool to select an area of the chip and drag it to a new position, or Alt/Option-drag to create a copy of it. The Edit menu commands can also be used to cut, copy and paste selections.
Note that a newly dragged or pasted selection "floats" over the chip until you drop it into place by clicking outside it or pressing the Return or Enter key.