help , please

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 2. (20 pts) Perform the following (subtraction) operation (Need to show all steps): (1 - 11) 10 Using signed binary, 8-bit 2's complement arithmetic. 3. (40 pts) 32-bit FPN (IEEE 754) to decimal and back (Need to show all steps) (a) Convert the following 32-bit FPN (IEEE 754) to decimal number: 1 10000000 11001000000000000000000 (b) Convert the following decimal number to 32-bit FPN (IEEE 754) number: (-3.125)10 At the end of each problem CLEARLY state the final result