Creator of Copy-Paste, Dies at 74 But before Tesler's work, computer users had to interact with clunky programs in different "modes," where the same commands meant different things depending on how they were used. Even an expert like Tesler found that to be a problem. Previous Next Pages: 1 2 3 4 5 6 7 8 9 amazon apple bill gates computer dead death Famous invention inventor laptop Shortcut steve jobs technology Tesler usa world Xerox 2020-02-24 admin