[08/30/2011]

Laptops? 83
Windows? 83
Linux? ~40
Mac? 15

Programming Languages:
C++   83
C     81
Java  70
Python 20
ActionScript 3
PHP   20
Perl  12
Ruby  12
LISP  6
HTML/CSS/JavaScript  30
C#    8

What is an operating system?
-- ONE SUCCINCT SENTENCE    (write it down)

-- a layer of abstraction to help coordinate
   system processes
-- program interface between hardware and programs
-- GUI for ease of use for the end-user
-- a programming interface for managing inputs
   into a computing system

What are operating system design goals?
-- security
-- speedy
-- efficiency
-- organized
-- usability
-- functionality
-- reliability
-- universality
-- simplicity
-- robustness
-- scalability
-- comprehensive
-- flexibility
-- extensibility
-- modularity
-- maintainability


ENIAC (Electronic Numerical Integrator And Computer)
-- no stored programs
-- military applications
-- programmed by setting switches or plug-boards

Human operator decides the order
-- Four incoming processes (jobs)
---- (A) 150 cards     8 hours  <-- use historical data
---- (B) 100 cards     4 hours
---- (C) 70 cards      1 hour
---- (D) 420 cards     2 hours