Why are the letters on a keyboard organized the way they are?

do a google search on the history of the QWERTY keyboard. To give you a head start, they were arranged that way because it was felt with early typewriters that this arrangement of key hammers (the parts that struck the paper, not the keyboard) would be least likely to have the hammers jam. The decision had nothing to do with productivity or how people type.

The QWERTY keyboard:

Well it was created by Christopher Latham Sholes

It was first used on type writers and was so popular it came to modern keyboards.

The reason for qwerty was that it was to slow typewriters down, Because if you went to fast it would jam up and clash the keys together, This allowed them to not go as fast

There you go.

its because the middle row of keyboard contains the most frequently used alphabets then the upper row contains a little less frequently used alphabets and the bottom row contains least frequently used alphabets.

cuz its like QWERTY UIOP ASDFG HJK LZXC VBNM