Software Arts VisiCalc (1979-1985) Handheld Computers internal vacuum tubes

internal vacuum tubes

was a landmark machine as the world's first 16-bit personal computer

it was highly prized for its built-in signal strength and battery meters

was a cornerstone of mid-century home audio and represented the absolute gold standard for tabletop radio performance

To control the volume on this strictly mechanical machine

Software Arts VisiCalc (1979-1985) Handheld Computers internal vacuum tubesVisiCalc First Commercially Released Computer Spreadsheet Program VisiCalc, released in October 1979, was the "killer app" that single handedly transformed the personal computer from a hobbyist's toy into an essential business tool. Conceived by Dan Bricklin while watching a Harvard Business School professor laboriously erase and recalculate a financial table on a blackboard, and programmed by Bob Frankston, VisiCalc introduced the world to the