CALS 85 Lecture Four, Thursday September 24, 2009, Room 314 Dewey Hall, 11:30-12:45

Attendance

Questions?

ANNOUNCEMENTS & ASSIGNMENTS:

First Exam: Two weeks away (Oct 8).  Be on time or lose points!  Exam will cover anything presented in lecture, lab, and readings online and in the textbook.  Old Exams are online.

Friday Lab Folks, please go to another lab the week of Oct 5 - 9.  Either go to lab on Tuesday afternoon 2:30-4:00, or Wednesday afternoon 1:55-3:30, or do the lab assignment on your own.  Please let me know if you have concerns/questions.

Websites of the Week: Exact time from the US Naval Observatory,  Free online file conversion website: http://www.zamzar.com/ (thanks to TA Chris Deapo), The Story of Stuff (with Annie Leonard)Wolfram Alpha, a new search engine concept: ask computational questions.

Preview of Lab Next Two Weeks:
This week:  Finish PowerPoint presentations, and lab 2
Next Week: Working with Unix command line, and safe fast email client pine.  How to tell how much stuff you have saved in your zoo home directory: du -sk  (units are reported in KiloBytes, so 500000 = 500 MegaBytes, keep total under Five Gigabytes or 5000 MegaBytes)

Reading: CD Players, Sound coded as bits, Laser Printers, Scanners, Optical character readers.

Text Sections 4-6 (pages 24-45) Study all previous reading and the video (on reserve in Media Library downstairs in Bailey-Howe: "Triumph of the Nerds, Volume 2 Riding the Bear" on the shelf of reserved videos, may be shelved in AGRI instead of CALS)

LECTURE:

System board, conceptual map of zoo, and how transistors are made, handouts

Difference between Memory and Storage, and Units

Types of Data

Video: How Bill Gates became the richest man in the world

Graphing Exercise #1