VisiCalc also displayed values in columns and rows, labeling each column with a letter from A to BK (63 columns) and each row with a number from 1 to 254. Each worksheet had dividers for columns, and lines to define rows. VisiCalc for DOSīefore the computer spreadsheet, accountants tabulated numbers on paper worksheets. You can track most of Excel’s design decisions back to VisiCalc. Originally released for the Apple II personal computer, VisiCalc also made its way to DOS and the IBM Personal Computer in 1981. The first “computer spreadsheet” as we recognize it was VisiCalc, by Dan Bricklin and Bob Frankston in 1979. But have you ever wondered why Excel looks and acts the way that it does? Why does Excel arrange data in a grid of cells? Why are columns identified by letters, and rows by numbers? The answer, like most things in IT, is because of compatibility. The spreadsheet you are probably most familiar with is Microsoft Excel.
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