<P> Variant 2 of the Brazilian keyboard, the only which gained general acceptance (MS Windows treats both variants as the same layout), has a unique mechanical layout, combining some features of the ISO 9995 - 3 and the JIS keyboards in order to fit 12 keys between the left and right Shift (compared to the American standard of 10 and the international of 11). Its modern, IBM PS / 2 - based variations, are thus known as 107 - keys keyboards, and the original PS / 2 variation was 104 - key . Variant 1, never widely adopted, was based on the ISO 9995 - 2 keyboards . To make this layout usable with keyboards with only 11 keys in the last row, the rightmost key (/? °) has its functions replicated across the AltGr + Q, AltGr + W, and AltGr + E combinations . </P> <P> Essentially, the Portuguese keyboard contains dead keys for five variants of diacritics; the letter Ç, the only application of the cedilla in Portuguese, has its own key, but there are also a dedicated key for the ordinal indicators and a dedicated key for quotation marks . The AltGr + E combination for producing the euro sign € (Unicode 0x20AC) has become standard . On some QWERTY keyboards the key labels are translated, but the majority are labelled in English . </P> <P> During the 20th century, a different keyboard layout, HCESAR, was in widespread use in Portugal . </P> <P> The current Romanian National Standard SR 13392: 2004 establishes two layouts for Romanian keyboards: a "primary" one and a "secondary" one . </P>

Who decided where the letters go on a keyboard