The Apple II’s central processor unit was based on ... monochrome text on the screen. Software Arts released the first computer spreadsheet, Visicalc for this computer, in 1979.

Apple II, II Plus, IIe and IIc Introduced in 1977, the Apple II came with 4K of RAM and hooked up to a TV and cassette tape recorder. A year later, a floppy disk was available. In 1979 and 1983 ...