1. (40 pts) Binary to decimal and back (Need to show all steps ) ... (a) Convert the following unsigned binary number to decimal: (111111)2 = (?) 10 (b) Convert the following unsigned binary number to decimal: (0.1111111 1)2 = (?) 10 (c) Convert the following decimal number to binary: (1111.111) 10 = (?)2 (d) Convert the following hexadecimal number to binary, then the binary to decimal: (FFFF) 16 = (?) 2 = (?) 10