Multifunction keyboards using the LCDs

Question

Explain how the multifunction keyboards are developed by using the LCDs?

Answer 1

For MFKs developed using the LCDs, panel is generally a constant smooth surface along with the individual switch function and area recognized by the matrix addressed LCDs. As LCDs have the graphics capability, it is too possible to enter into the numerical value by pressing surface of an LCD panel within the area in which a portion of the curve is showed in place of entering the numerical value by using the keyboard.