1. Computer Science 129 Science, Computing and Society Week 5 Chapter 4

2. GRE/GMAT WORDS Assuage – to lessen (pain, grief, guilt) Anomaly – something irregular or abnormal Propriety – conformity to established standards of behavior, manner etc. Enigma – puzzling person, event or situation

3. Chapter 4 Logic Gates an idealized or physical device implementing a Boolean function, that is, it performs a logical operation on one or more logic inputs and produces a single logic output.

4. Chapter 4 Boolean Function 1854 mathematician George Boole BOOK - An Investigation of the Laws of Thought Algorithms – If – Then statements

5. Chapter 4 AND Logic Gate If input A AND input B are A 1, then output is 1 INPUTOUTPUT ABA AND B 000 010 100 111

6. Chapter 4 OR Logic Gate If input A or input B are a 1, then output is a 1 INPUTOUTPUT ABA OR B 000 011 101 111

7. Chapter 4 INPUTOUTPUT ANOT A 01 10 NOT Logic Gate Output is opposite of input If input A is 1, then output is 0 If input A is 0, then output is 1

8. Chapter 4 INPUTOUTPUT ABA NOR B 001 010 100 110 NOR Logic Gate If input A nor input B are a 1, then output is a 1

9. What You Should Know KNOW ALL GRE/GMAT WORDS FOR MIDTERM EXAM

10. What You Should Know Be able to define all 4 Logic Gates discussed Know the outputs for each type