toy alphabet drawing pad and multiplexing.... ?????

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hi! have idea making simple midi  controller using found childs alphabet drawing board toy. toy has pad 1 puts paper sheets on , exercises in drawing letters , numbers. took apart , discovered has membrane pad 40 or presses on it. output of membrane 2 ribbon type cables. 1 having 14 wires , other 8. wondering if have pointers how connect via 4051 multiplexer arduino arduino registering keypresses ones , zeros... can point me in direction have take connect 16 outputs ribbon cables 4051 chip arduino board???
i hope post isnt vague , has maybe done similar.
thanks,
steve.

it's variation on keypads - there quite few posts that. 4051 looks 8 channel multiplexer , have 22 pins, 1 won't enough. 16-bit port expander or 2 might it:

http://www.gammon.com.au/forum/?id=10945

if used mega have enough pins straight out, , use keypad library think.


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