1. Lecture #2 Agenda Announcements Questions? Computing environment –accounts –e-mail accounts/forwarding Web site tour (schedule + readings) Computer Science Activity & Review Problem solving, starting with analysis, decomposition and modeling

2. Announcements Put out your name signs! Didn’t get a handout last class? I’ve got extra copies up front: –Syllabus –Lab 1 preparatory work

3. Questions? Syllabus questions? Other questions?

4. Computing environment UB computing account (UBUnix) workstations compute serversfile servere-mail server @buffalo.edu CSE computing account Baldy 21 file servere-mail server Bell 216 compute servers (Linux)@cse.buffalo.edu styx.cse.buffalo.edu nickelback.cse.buffalo.edu Netapps file server

5. Web site tour www.cse.buffalo.edu/faculty/alphonce/Courses/Fall2007/cse115 Visit web site regularly (several times a week) announcements labs and other assignments schedule with readings resources

6. Computer Science Study of Computation What is computable? What is a model for computation? What can be computed efficiently?

7. Computer Science more broadly... Study of Computation Software Development Networking Computer Architecture Risks & Social Impacts Programming Languages Databases Artificial Intelligence Data Structures & Algorithms BioInformatics Computational Linguistics Robotics Tele- medicine Computer Vision & Image Processing Computer Graphics E-Commerce GIS

8. OO systems: interacting objects (from K. Nygaard, ITiCSE 2002, Århus, DK) image downloaded from: http://heim.ifi.uio.no/~kristen/FORSKNINGSDOK_MAPPE/FORSKNING_MAIN.html

9. Kristen Nygaard Passed away in August 2002 (8/27/1926- 8/10/2002) Developer of Simula and Simula67, the first OO langauge, together with Ole-Johan Dahl. Also winner, together with Ole-Johan Dahl, of: IEEE 2002 John von Neumann Medal ACM 2001 Turing Award

10. Ole-Johan Dahl Passed away in June 2002, about two months before Kristen Nygaard.

11. Simula