Input & Output

Doug Engelbart’s mouse prototype

The prototype mouse invented at Stanford Research Institute rolled on two sharp wheels facing 90 degrees from each other.

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Human-Computer Interaction

Computers have always been good at calculations and data processing. But to evolve from specialized devices to a universal tool required more efficient ways to “talk” to people.

Early computers communicated primarily with coded text. Gradually they learned to use images. The development of graphical interfaces was key to creating powerful hardware and software systems that anyone could use.