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LCD have 16 pins, the keypad have 8 pins. I will make a Pmod module to connect them by Basys2(or Nexys 2). I suppose that Datta pins on LCD will be connected with resistors and then connected to Basys2(or Nexys 2). I think the keypad dont need resistors.
Hi guys! I must make circuit on FPGA based calculator. The calculator is by LCD 16x2 display and 4x4 membrane keypad. But i dont have idea how it will do. With VHDL code i dont have a problem, but the circuit :-?....Can anyone give me an idea how i do the circuit and help me?
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