1 The Two-bit Computer In this lab, you are to design a simple 2-bit "computer". The circuit takes three (word-level) inputs AL1:0 Bl1 : 0] : oj: where A, B, 1 are each 2-hit vectors. In other words. All : 01 = (ai, ao), are binary variables. A:,B1:0 are the "data inputs of the design and 1:0 corresponds to the "control" or the "instruction" input. The output is also a 2-bit vector, Fl!= (f.fo). Circuit functionality: The values of the input control signals ( circuit. The instructions are : 01) decide the operation of this When III : = (ii,io) = (0,0). the output Fli : 0] is a bit-wise complement of All : O! (i.e., f and fi = a, ). . when/11 : = (il, o) = (0.1), the output Fli : oj is a bit-wise AND of the inputs (ie..h = ai-b1; oa 60) . when 1[1 : 0] = (11:10) = (1,0), the output FII : oj is the sum of A and B. . when 1[1 :0] = (h,6) = (1,1), the output Fli :0 is the difference of A from B. Note that when the result of the sum or difference requires more than two bits that the error output is asserted Schematic entry: Using the Altera Quartus tool, draw the schematic corresponding to your design using AND, OR, NOT, XOR, etc. gates. Do not use pre-designed multiplexors (MUXs). Using a Verilog testbench, simulate the schematic and verify the correctness of your design. Your testbench should apply ALL. possible inputs to the design