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CS105- Module2. Hardware vs. Software. Local Applications. Local applications are programs or software that can be run on a single computer. The computer on which the local application is running does not have to be connected to a computer network such as internet. Examples.

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local applications
Local Applications
  • Local applications are programs or software that can be run on a single computer.
  • The computer on which the local application is running does not have to be connected to a computer network such as internet.
  • Examples
examples of local applications
Examples of Local Applications
  • Media Players (Windows Media Player, RealPlayer, Winamp, …)
  • Word Processors(MS Word, Latex, WordPad,…)
  • Graphic, photo and animation applications (PhotoShop, Word Photo Manager, 3D Studio MAX).
  • Calculator
local applications in business
Local Applications in Business
  • Accounting (Excel, …)
  • Science and Engineering (Mathematica, Math Lab, System R, Weka, … )
  • Medicine ( Computerized Axial Tomography scan )
file type
File Type
  • Broadly classified as either text file or binary file.
  • Text file, the data are organized as characters.
  • Binary file requires specific interpretation of the bits and the application which supports this file knows how to interpret it.
file type1
File Type
  • Usually the file name has two parts: the main name and the file extension. The extension indicates the type of the file.













file operations
File Operations
  • Create a file
  • Delete a file
  • Open a file
  • Close a file
  • Read data from a file
  • Write data to a file
  • Delete contents of a file
  • Rename a file
  • Copy a file
  • Append data to the end of a file
  • Directory is a named collection of files. It is a way to group files so that you can organize them in a logical manner.
  • In Windows methodology a directory is called a folder.
  • Other than files a folder can contain other folders.
  • A sequence of well-defined steps or instructions for doing a task.
  • An algorithm should end (Stop) at some point.
word processors ms word
Word Processors - MS Word
  • What you see is what you get!
  • Word is a very popular text editing software.
  • Enter and edit the text.
  • Insert and edit images.
  • Arrange page: orientation, border, shade, etc.
  • Use bullets in Word.
  • Check the grammar and spelling of the contents.
  • A basic tutorial for MS word 2007 is available at:


word processors latex
Word Processors - LaTeX
  • It is not very easy to write mathematical equations in MS Word. A much better alternative is LaTeX.
  • LaTeX is not a WYSIWYG.
  • First we write a .tex file, then we compile it.
  • Example.
  • A basic tutorial for Latex is available at:


  • A spreadsheet is the computer equivalent of a paper ledger sheet used by accountants couple of decades ago.
  • Using ledger sheet a small mistake could have resulted in redoing the whole page again. But we can undo any action.
  • Also the calculation could have been overwhelming. But using spreadsheets, computer will take care of calculations.
what is powerpoint
What is PowerPoint?
  • A complete presentation graphics package.
  • Gives you everything you need to produce a professional-looking presentation.
  • Offers word processing, outlining, drawing, graphing, and presentation management tools.
graphics processing
Graphics Processing
  • A very simple graphics processing application is the Paint.
  • In a painting program, we decompose an image into a collection of small dots, known as pixels.
  • If you zoom on a picture you will see these dots.