For Computation Structure 1d Project. To start mannual testing mode, turn on left most switch of the right most group of switch. Press button on the left, current configuration of the left 2 groups of switchs will be remembered as input a (each switch represents one bit). Press button on the right,current configuration of the left 2 groups of switchs will be remembered as input b. The left two groups of led will display the result of the alu function of the remembered inputs a and b. To change function, manipulate the 6 switches on the right: ADD: 000000 SUB: 000001 AND: 011000 OR: 011110 XOR: 010110 A: 011010 SHL 100000 SHR 100001 SRA 100011 COMPEQ: 110011 COMPLT: 110101 COMPLE: 110111 MULTIPLY: 000010 To start auto testing mode, turn on second left most switch of the right most group of LED. There are 15 test cases in total. For each testcase, if it is true, the IO_shield will display its index. If it is false, the IO_shield will display "FAIL". Press the center button to start and restart. Turn on the 7th switch on the right to pause. The testcases are: {ADD, ADD_OVR, SUB, SUB_OVR, AND, OR, XOR, A, SHL, SHR, SRA, CMPEQ, CMPLT, CMPLE, MULTIPLY, MOD}