!!!VisiCalc from Dan Bricklin and Bob Frankston ; Copyright (C) 1980- Software Arts, Personal Software Inc. (later named VisiCorp.), Paladin Software, Lotus Software, Lotus Development Corporation and finally IBM ; in order of license dissemination
!!The main goal of this chapter is to provide the user with informations and templates regarding the killer application VisiCalc.
Dan Bricklin and Bob Frankston gave the AtariWiki the following info: [How I got permission to post VisiCalc (1999)|http://static.userland.com/userLandDiscussArchive/msg008583.html] ; Thank you very much Dan Bricklin and Bob Frankston for your outstanding application of all times. We really appreciate your help and support so much. :-)))

!!ATR Image
* [VisiCalc_Data_with_DOS_2.5_SD_Color.atr] ; typical spreadsheet from Visicalc on a DOS 2.5 Color diskette. For loading please type in '/SL', the filename and press RETURN.

!!Pictures
[{Image src='Science3.jpg' width=639 height=433 }]
Typical spreadsheet from Visicalc with a lot of basic functions\\
\\
[{Image src='LOOKUP.jpg' width=644 height=342 }]
Typical spreadsheet from Visicalc with the LOOKUP function\\
\\
[{Image src='NPV.jpg' width=648 height=196 }]
Typical spreadsheet from Visicalc with the NPV function\\
\\
[{Image src='Linear.jpg' width=660 height=402 }]
Typical spreadsheet from Visicalc with a linear function and split windows\\
\\
[{Image src='LN.jpg' width=655 height=398 }]
Typical spreadsheet from Visicalc with a logarithmic function and split windows\\
\\
[{Image src='EXP.jpg' width=650 height=391 }]
Typical spreadsheet from Visicalc with an exponential function and split windows\\
\\
[{Image src='SIN1.jpg' width=657 height=400 }]
Typical spreadsheet from Visicalc with a sine function and split windows 1\\
\\
[{Image src='SIN2.jpg' width=651 height=391 }]
Typical spreadsheet from Visicalc with a sine function and split windows 2 ; please take into account that negative values from column B are not shown in column C

!!References
* [DIF_Technical_Specification.pdf] ; Data Interchange Format (DIF) specifications to exchange data from Visicalc with other programs. Highly recommended! Thank you Bill. :-)

!!Printouts
* [Spreadsheet_Printout.txt] ; typical printout of a normal Visicalc spreadsheet
* [VISICALC-Printout_with_Formulas.txt] ; printout of a normal Visicalc spreadsheet with formulas