1. James Tam Basic Logical Operations (Fascinating) In this section you will learn what are the basic logical operations and how to evaluate different logical expressions Image from Star Trek © Paramount

2. James Tam Logical AND Truth table XYX AND Y False TrueFalse TrueFalse True Logic gate Truth table XYX AND Y 000 010 100 111

3. James Tam Logical AND: An Example TTFFTF ANDFTFTTF FTFFTF

4. James Tam Logical OR Truth table XYX OR Y False True FalseTrue Truth table XYX OR Y 000 011 101 111 Logic gate

5. James Tam Logical OR: An Example TTFFTF ORFTFTTF TTFTTF

6. James Tam Logical NOT Truth table XNot X FalseTrue False Logic gate Truth table XNot X 01 10

7. James Tam Logical NOT: An Example TTFFTF NOTFFTTFT

8. James Tam Logical NAND Truth table XYX AND YX NAND Y False True FalseTrueFalseTrue False True False Logic gate Truth table XYX AND YX NAND Y 0001 0101 1001 1110

9. James Tam Logical NAND: An Example TTFFTF ANDFTFTTF FTFFTF NANDTFTTFT

10. James Tam Logical NOR Truth table XYX OR YX NOR Y False True FalseTrue False TrueFalseTrueFalse True False Truth table XYX OR YX NOR Y 0001 0110 1010 1110 Logic gate

11. James Tam Logical NOR: An Example TTFFTF ORFTFTTF TTFTTF NORFFTFFT

12. James Tam Logical Exclusive OR (XOR) Truth table XYX XOR Y False True FalseTrue False Logic gate Truth table XYX XOR Y 000 011 101 110

13. James Tam Logical XOR: An Example TTFFTF XORFTFTTF TFFTFF

14. James Tam Reasons For Learning About Logic Hardware perspective The computer is built using logic circuits

15. James Tam Reasons For Learning About Logic (2) Software perspective Logic is common-place in computer programs

16. James Tam You Should Now Know The different types of logical operations that a computer may perform AND OR NOT NAND NOR XOR How logic gates form an important part of computers