Addition, Subtraction, Double Dabble Algorithm, 7-Segment Display
Addition: Uses basic Ripple Carry Adders
Subtraction: Uses 2's Compliment for the second number when in subtraction mode
Double Dabble: Uses Ripple Carry Adders in series to left bit shift the most significant bit then adds 3 if each 4 bit lsd is greater than 4
7-Segment: Takes in input from the decimal decoder for each 4 bit segment and displays each number correctly in base 10.
1) Select the mode on the operator (right) side of the numbers.
2) Select numbers to add/subtract
3) Press the '1st number' button to store it into input A memory
4) Select a new/same number to add/subtract
5) Press the 'equals' button to store it into input B memory
6) Numbers will display within 10 seconds via 7-segments
7) To start over, press the 'CE' (Clear All) button.