VisiCalc is the first spreadsheet software program. It was simple to use and enabled sorting and storage of data in tabular rows and columns. VisiCalc was designed to address and replace the manual spreadsheet management process, where changing a single value required altering the entire spreadsheet because with VisiCalc, the changes made to one cell were automatically applied to all the related cells. This software was one of the key things that made personal computers more marketable to regular consumers and businesses, whereas they had previously been relegated to hobbyists and tech geeks.