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Also a standard keyboard can be used with a special keyboard driver software as half-keyboard for temporary or testing use, as the physical layout does not differ.
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It is said to be quick to learn, because human bodies can easily replicate one motion on one side to the other side, and almost as fast as a normal keyboard.
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Factors in Computing Systems
101:"Half-QWERTY: a one-handed keyboard facilitating skill transfer from QWERTY"
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Lawrence, Elaine; Pernici, Barbara; Krogstie, John (30 August 2004).
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Matias, Edgar; MacKenzie, I. Scott; Buxton, William (1993).
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64:Understanding Computers: Today and Tomorrow
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61:Morley, Deborah; Parker, Charles (2013).
30:The "Half-QWERTY" keyboard, invented by
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