Origin of shift key
Examples from the Web for shift key
Edwards has favored the full key-board as being less of a drain upon the attention than the "shift-key" machine.
It is evident that both the shift-key arrangement and the double keyboard have their particular psychological advantages.Psychology and Industrial Efficiency|Hugo Mnsterberg
On the shift-key machine he must still struggle with the built-up exclamation point, the ditto quotes and the hyphen dash.