Logic synthesis using NAND gates
You will now explore how different logic elements can be constructed using various
combinations of NAND gates. Some of these possibilities include an AND, NOT, OR,
XOR (exclusive-OR), a binary half-adder and with the application of feedback a memory cell
implemented with an RS or D flip-flop.
To avoid disassembling the mystery circuit, you will use another two 7400 chips since some
circuits need more than four gates. Refer to these chips as IC3 and IC4.
- Extend the +5V and GND power rails to the second breadboard.
- Carefully insert IC3 and IC4 on the second breadboard.
- Make the +5V (pin.14) and GND (pin.7) connections to the chips.
On the circuit diagrams that you will use, identify the input and output connections
and label each pin as it will be wired when you assemble the circuit,
as shown for the AND gate in the next slide.