arduino calculator with lcd 16*2
click in this link to get diagram and code :
https://drive.google.com/open?id=13wg...
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https://www.facebook.com/Electronique...
if you have any another idea tell us in comments and thanks
the symbols :
'A'= '+'
'B'= '- '
'C'= '* '
'D'= ' / '
' * ' = 'clear'
'#' = '= '