Combinational Logic Notes (12 pages)

Twelve pages of notes based on the function of combinational logic circuits. Examples of combinational circuits are given and explanations of how to write truthtables and express logic functions using Boolean Algebra. The notes show the effect of combining a variety of logic gates and how logic gates.

• Combining two NOT gates to make a buffer
• Combining AND, OR and XOR gates with a NOT gate
• Writing truthables
• Multiple input AND and NAND gates
• Multiple input OR and NOR gates
• Multiple AND gate circuits
• Multiple OR gate circuits
• Combining AND, OR and NOT gates
• A note on algebra
• Inverting inputs
• The magical NAND gate - Combining NAND gates to form other gates
• The magical NOR gate - Combining NOR gates to form other gates

Note: PART 1 is available to download as an introduction to logic gates.