270L01Notes

# 270L01Notes - 3-digit binary numbers EECS 270 1,ble scheme...

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2, D=13, E=14, F=15. So what is 10011001 2 in hex? We commonly use hex to represent large numbers which we’d prefer to use binary for just to make it more r o 3-digit binary numbers. table scheme, how many rows would there be? -bit addition? oblem down in a way that works better? EECS 270, Fall 2009, Lecture 1 Page 1 of 11 EECS 270 Fall 2009 Lecture 1 (9/9/09) Use pencil! Say we live in the rather black and white world where things (variables) are either true ( T ) or false ( F ). So if S is “Mark is going to the Store” and C is “Mark likes Computer games” then we’ll assume that each phrase is either true or false (as opposed only sort of liking computer games). We can then use connectives to combine the variables. Mark is going to the store AND Mark likes computer games. The above statement is only true if both phrases are true. Let that sentence be X . We can now draw the “truth table” for X (we’ll use the other tables in a minute). When is X true? S C X F F F T T F T T _AND _ S C F F F T T F T T ___________ S C F F F T T F T T ___________

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EECS 270, Fall 2009, Lecture 1 Page 2 of 11 C F T ___________
EECS 270, Fall 2009, Lecture 1 Page 3 of 11 What if the statement, Y , were “Mark is going to the store OR Mark likes computer games”? When is that true? How about Mark does NOT like computer games?

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## This note was uploaded on 04/18/2011 for the course EECS 270 taught by Professor David during the Spring '11 term at Michigan State University.

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270L01Notes - 3-digit binary numbers EECS 270 1,ble scheme...

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