Binary Arithmetic: Bit Shifting, 2s Complement Intro to Assembly Language
Binary Arithmetic: Bit Shifting, 2s Complement Intro to Assembly Language
CS 64: Computer Organization and Design Logic Lecture #3 Winter 2019
Ziad Matni, Ph.D. Dept. of Computer Science, UCSB
Why do CPU programmers celebrate Christmas and Halloween on the same day?
Because Oct-31 = Dec-25
1/16/2019
Matni, CS64, Wi19
2
Administrative Stuff
? The class is still full... waitlist is closed...
? Assignment 2 is this Thursday
? Linux Questions
? Reminder of Office Hours!
? Prof. Matni
Th. 1 ? 2:30 PM SSMS 4409
? TA Bay-Yuan Fr. 11 AM ? 1 PMTrailer 936
? TA Shiyu
Fr. 3 ? 5 PM
Trailer 936
1/16/2019
Matni, CS64, Wi19
3
Any Questions From Last Lecture?
1/16/2019
Matni, CS64, Wi19
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5-Minute Pop Quiz!!!
YOU MUST SHOW YOUR WORK!!! 1. Calculate and give your answer in hexadecimal:
~(0x3E | 0xFC)
2. Convert from binary to decimal AND to hexadecimal. Use any technique(s) you like:
a) 1001001 b) 10010010
1/16/2019
Matni, CS64, Wi19
5
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