Shift key
Overview
 
The shift key is a modifier key
Modifier key
In computing, a modifier key is a special key on a computer keyboard that modifies the normal action of another key when the two are pressed in combination....

 on a keyboard, used to type capital letters and other alternate "upper" characters. There are typically two shift keys, on the left and right sides of the row below the home row. The shift key's name originated from the typewriter
Typewriter
A typewriter is a mechanical or electromechanical device with keys that, when pressed, cause characters to be printed on a medium, usually paper. Typically one character is printed per keypress, and the machine prints the characters by making ink impressions of type elements similar to the pieces...

, where one had to press and hold the button to shift up the case stamp to change to capital letters;
the shift key was first used in the Remington
E. Remington and Sons
E. Remington and Sons was a manufacturer of firearms and typewriters. Founded in 1816 by Eliphalet Remington in Ilion, New York, on March 1, 1873 it started manufacturing the first commercial typewriter.-Becoming "E. Remington & Sons":...

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