2. Build a VI that functions as a calculator. The front panel should have numeric controls to input two numbers, and numeric indicator to display the result of the operation (add, subtract, multiply, divide) that the VI performs on the two numbers. Use integer slide control to specify the operation to be performed. The front panel should look like below. Hint: Use case structure. A/B Function 3-1 A'B 2- Result A-B 1- B A-B 3. Build a VI that turns on threes LED's (Red, yellow and Green) in a traffic light sequence. a. RED LED must be on for 7 secs. b. GREEN LED must be on for 15 secs. c. YELLOW LED must be on for 3 secs. Things to consider: Like any traffic lights, only one LED must be ON at a time. Once the sequence finished the entire sequence must be repeated until the user hits stop button. All the LED's must have their respected colors, means RED LED should be RED when turned ON and BLACK when turned OFF. Hint: Use sequence structures and local variables. The front panel should look like below. RED YELLOW STOP GREEN