Calculator Keypad
why does the number 5 have an extra feel on the keypad?
take a look at your cell phone, telephone or calculator, the keypad number 5 always have a small protruding thickness...does anyone know why.
Sorry I dont think or rather believe it is for the blind..becoz how in the world would they see the result..when they use a calculator..??
The blind use it for a middle ground, and can go from there and know where to press keys.
Just like some computer keyboards havea bump on the F and J so they know where to put their index fingers, to line the rest of them up to type.
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