The exact slope of the isoquant curve on the graph shows the rate at which a given input, either labor or capital, can be substituted for the other while keeping the same output level. In the ...

Professor Hawking used an input device controlled by his cheek movements to choose the words he wanted to use. A special output device turned those words into electronic speech that people could hear.

Devices that the computer system uses to send out or display information from the processor are called output devices.