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STAIR

• Why do we use it?
• When do we use it?

Essentials of a Computer

• Binary - base 2, 0's and 1's - voltages
• ASCII
• OP codes
  -lowest level command of computer
  -built into CPU

Binary problem

• Convert 11010 to base 10
• Convert 37 to base 2

Digital vs Analog

• Digital - infinite accuracy, limited precision
• Analog - infinite precision, limited accuracy

Problems Operating Systems are Good at Solving

• Organization
• An interface you can interact with efficiently
• Helps all parts of your system to communicate with each other

Operating Systems

• UNIX
  -commands
  -permissions
• Management systems
  -trees..remember the roots
  -find what you are looking for - activate
  -something promising - activate
  -lost - back up

Search Engines

• Advantages/Disadvantages
• Tools of the web browser
• Portals

Recursive Algorithm

• Begins with a large set
• Algorithm repeats on increasingly smaller subsets
• Eventually a trivial set remains

Internet Protocols

• TCP/IP - packets transferred
• HTTP - hypertext, web protocol
• FTP - files transfer
• PPP - rental IP numbers

EMACS

• Why learn Emacs?
• What is Emacs good for?

Advanced Graphics

• Why we need them
• When to use them
• Warnings

What to Study

• Understand the concepts
• Know how to apply the concepts