D E

1. The third bit of the byte differentiates between upper and lower case (ex. 01000001=A and 01100001=a)
2. To change a lowercase letter to an uppercase letter using it's decimal value, add -32
3. Subtract 48 from the ASCII decimal code of a decimal digit to determine it's value
4. 1001000
5. AAAAAABBBBBBBBB
6. ABA*95*a5AAAB
7. 999999
8. 333333
9. 003399
10. 009933
11. 555500
12. 6

1. D
2. 01000100
3. 44
4. 68
5. 233
6. -68
7. 11000100
8. 10111011
9. 10111100

1. E
2. 01000101
3. 45
4. 69
5. 234
6. -69
7. 11000101
8. 10111010
9. 10111011

1. 0100010001000101
2. 4445
3. 42105
4. 17477
5. 1100010001000101
6. -17477
7. 15290
8. 15289