Write a proteus code for the following statementA Simple Electronic Calculator

Requirements:

To simulate the working process of an electronic calculator, six $7-$segment LED displays are used to display the results of calculation. The operands are set by a $2**8$ keyboard with keys $0-9$ and,,$+-**,/,$ 'cal'. The keyboard is scanned by inquiry mode. After the operands and operator are input by the user, the calculator starts its calculation when the key with 'cal' is pressed and the result is shown on the six $7-$segment LED displays. Use a $8255$ A chip as the interface.