CS130 - First class: 1/17/2011
- On prediction
- intro
- Administrivia
- first day quiz
- pretest
- drop/add
- Problem solving
- What you do when you are stuck
- The first problem solving technique
- Computing
- Is information processing: input, output, processing
- Hardware: The structure of a digital computer
- Files and directories
- A file is information stored on disk
- A file has a name (usually including and extension which, typically, tells what sort of a file it is) and some number of bytes of information
- Directories are used to organize files
- A directory is a special kind of file that has a list of files it contains (they may be ordinary files or directories)
- The "root" of each disk (physical or virtual) is a directory that all files on the disk are in (directly or indirectly)
- To explore the directory structure on a Mac box, you use the Finder (demo)
- Different applications (application is short for "application program", as distinguished from "system program", and long for App),
can interpret and display the contents of a file differently.
Extensions are often used (by the operating system) to select which application to use to open a file.
- Software: the programs that run on the hardware
- Operating systems/system programs
- Application programs
- Distributed with the system -- examples:
- Downloaded from the web
- Written by individuals