1. COMS W1004 Introduction to Computer Science June 10, 2009

2. Last Time Review of homework #2 solution Comparison operators and Boolean logic Conditionals Loops Random numbers Reading: Big Java 5.1-5.4 and 6.1-6.5

3. Today Strings –Useful methods –Converting to integers –Comparing Binary numbers Encoding Computer architecture basics Reading: S&G chapter 4

4. Research Project Papers are due at 5:30pm on Weds Jun 24 Presentations begin Weds Jun 17 http://www.cs.columbia.edu/~cmurphy/1004/project.html If you did not receive an email from me last week about your project, please contact me ASAP!

5. In-class Presentation Schedule DateGroup 1Group 2Group 3Group 4 Jun 17Bullard Feldman Lefkovitz Cooperberg Kuhn Stern Lee Peeples Jun 22Henderson Loeffler Kemp Rodrigues Jun 24Cabrera Shi Harris Siegel Jun 29CalhounCastaldoMalloyO’Hagan

6. Homework #3 Due next Monday, June 15 at beginning of class Theory –Paper submission only Programming –Electronic submission and paper submission Slight modification to CreditCardTest and extra credit portion