Logic Gates

A. use logic gates to create electronic circuits

B. understand and define the functions of NOT, AND, OR, NAND, NOR and XOR (EOR) gates, including the binary output produced from all the possible binary inputs (all gates, except the NOT gate, will have 2 inputs only)

• Binary logic

C. draw truth tables and recognise a logic gate from its truth table

• Logic, truth tables and switching circuits

D. recognise and use the these standard symbols used to represent logic gates: NOT   AND   OR   NAND   NOR   XOR   XNOR

• Circuit maker

• Logicly

• The logic lab

• Logic gate simulator (needs download)

• Logic circuit (needs download)

E. produce truth tables for given logic circuits

• Logic gates exercises

F. produce a logic circuit to solve a given problem or to implement a given written logic statement, such as IF (switch A is NOT on) OR (switch B is on AND switch C is NOT on) then alarm, X, sounds

• Simple counting machine

• Binary logic exercises

• NAND gate challenge

• NAND gate solution

Notes

1. ZAK Notes

2. Universal Gates (NAND  &  NOR)

3. Equivalent Gates

4. Logic Gates

5. Boolean algebra and digital logic