1. Alternative check off 1:
   Use the toHex_tf.v test fixture to test your module and show it to a TA.
2. Alternative check off 2:
   Use the text fixture twoDigitDisplay_tf.v to test your design and check off with a TA. Note that SW[0] stands for the highest bit and HEX0 stands for the high-order digit. To use the test fixture, you should leave the two digits that represent the number about to be pushed in hanging.
3. Alternative check off 3:
   Test your ALU unit with the alu test fixture alu_tf.v and check off the console output with a TA.
4. Alternative check off 4:
   Use the test fixture decimalAccumulator_tf.v to test your decimal accumulator.