Task: Create a calculator on Tinkercad using 1. 4x4 Keypad (Use A, B, C, D to represent +, -, *, 7) 2. Two 7-segment displays When the program starts, 1. You should enter the first number, show it on 7-segment display 2. Then use one of the A, B, C, D to enter one of the +, -, *, / operations 3. Enter the second number, show it on 7-segment display 4. Display the result on 7-segment display