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Build an interactive calculator. Using an Arduino Uno, the OLED Display and matrix keypad to build a simple calculator application. The user presses the operands

Build an interactive calculator.

Using an Arduino Uno, the OLED Display and matrix keypad to build a simple calculator application. The user presses the operands and operators using the keypad. The calculation output should be displayed on the OLED display. You may make the following simplifying assumptions.

a)Assume 1 digit numbers

b) Assume only two operators + and -

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