Fundamentals
- computers work in binary
- electrical impulses are either off or on (two choices: 0 or 1)
- per column in a number, we have two possible choices: 0 or 1
- every time a column is added to the left, its value is multiplied by 2
| 256 |
128 |
64 |
32 |
16 |
8 |
4 |
2 |
1 |
| 0 (236) |
1 (108) |
1 (44) |
1 (12) |
0 (12) |
1 (4) |
1 (0) |
0 (0) |
0 (0) |
- 128 + 64 + 32 + 8 + 4 = 236
- 236 in binary is thus: 11101100
| 256 |
128 |
64 |
32 |
16 |
8 |
4 |
2 |
1 |
| 0 (179) |
1 (51) |
0 (51) |
1 (19) |
1 (3) |
0 (3) |
0 (3) |
1 (1) |
1 (0) |
- 128 + 32 + 16 + 2 + 1 = 179
- 179 in binary is thus: 10110011