Version 2 of Category Spreadsheet

Updated 2012-08-19 06:31:49 by RLE

Presentation

In this category we'll find all pages that refer to spreadsheets.

To get a list of all pages on this Wiki that belong to this category, click on the title on the current.

Place the tag: Category Spreadsheet on the bottom of the page you'd like to link to the Spreadsheet category.


List of Spreadsheets written in Tcl-Tk

Click here: http://wiki.tcl.tk/_/ref?N=27922


What is a spreadsheet?

A spreadsheet in the physical world is a piece of paper with a grid of boxes drawn on it, used to attempt to convey in some fashion a relationship between at least two vectors of information.

These vectors are typically referred to as rows and columns of data, and the basic unit of information for the spreadsheet, the intersection of a row and column, is a cell of data.

For instance, the vectors may represent columns of months/weeks/days/hours and rows of data (money spent, sales achieved per individual, etc.).

Electronically, one of the early spreadsheets was Visicalc. It provided more than just an input grid for one to type in numbers and words. It also provided the means to associate calculations (known as formula) to specific cells, and even link ranges of cells to a specific formula.

The most popular spreadsheet under DOS was Lotus 123 programmed by Mitch Kapor.

When Dos was replaced by Windows 95, Excel replaced Lotus 123 and Excel is to this day the most popular spreadsheet for Windows.

---> For more details, see: http://en.wikipedia.org/wiki/Spreadsheet


Demand-driven computation

AM The way spreadsheets work (with formulae for a cell that reference other cells) made me think of developing a different kind of programming: Demand-driven computation


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