In addition to the other systems are used, such as:
QWERTY - the world's most widely used
QWERTZ - used in German speaking countries
Differences with QWERTY:
Keys A and Q are swapped
Keys Z and W are swapped
M is moved from the right side of the Sun on the right side of L (in place of the semicolon).
In addition, on both AZERTY keyboards, such as French and Belgian, 0-9 keys are in, albeit in the same places, but you must press the "Shift" to have access to them. A similar arrangement of figures can also be found on other keyboards (eg the Czech and Slovak).
