Hebrew keyboard key (or pressing Caps Lock) in Windows produces the uppercase Latin letter without the need to switch layouts. There are a variety of layouts that, for the most part, follow the phonology of the letters on a Latin-character keyboard such as the QWERTY or AZERTY. Where no phonology mapping is possible, or where multiple Hebrew letters map to a single Latin letter, a similarity in shape or other characteristic may be chosen. For instance, if ס ("samech") is assigned to the S key, ש (shin/sin) may be assigned to the W key, which it arguably resembles. The shift key is
QWERTY Edison's 1872 electric print-wheel device which later became the basis for Teletype machines; Lucien Stephen Crandall's typewriter (the second to come onto the American market) whose type was arranged on a cylindrical sleeve; the Hammond typewriter of 1887 which used a semi-circular "type-shuttle" of hardened rubber (later light metal); and the Blickensderfer typewriter of 1893 which used a type wheel. The early Blickensderfer's "Ideal" keyboard was also non-QWERTY, instead having the sequence "DHIATENSOR" in the home row, these 10 letters being capable of composing 70% of the words in the English language. Alternating hands while typing is a desirable trait