(2 points) What does the CU do? (2 points) What is a bus for? (2 points) How is a bus physically implemented? (2 points) What is needed to identify a byte in memory? (2 points) If you have a computer that has 4 wires to represent the address of a byte in the computer's memory, how many locations (bytes) will the computer have in its memory? (2 points) What is done in the first step of the cycle to execute a machine instruction cycle? (2 points) What does PC have? (2 points) Convert 111100002 to octal. (2 points) Convert 111100002 to Hexadecimal. (2 points) Convert 17 to binary. (2 points) Convert 17 to hexadecimal. (2 points) Convert 1FFE16 to octal. (2 points) Convert 1FFE16 to binary. (2 marks) What binary number does the number represent in IEEE 754 single precision format? 100000111110000000000000000000002 = ____________________2 (2 marks) Perform the following arithmetic operation with the following binary patterns of size eight representing signed integers. Is the result valid? 111000002 +110001012 _______________ (2 marks) Perform the following arithmetic operation with the following binary patterns of size eight representing signed integers. Is the result valid? 111000002 - 110001012 _______________ (2 marks) Perform the following arithmetic operation with the following binary patterns of size eight representing unsigned integers. Is the result valid? 111000002 + 010001012 _______________ (2 marks) Perform the following arithmetic operation with the following binary patterns of size eight representing unsigned integers. Is the result valid? 111000002 - 010001012 _______________