| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| who developed operating system | 1.99 | 0.5 | 5504 | 54 | 30 |
| who | 1.84 | 0.3 | 4555 | 68 | 3 |
| developed | 1.29 | 0.5 | 1268 | 39 | 9 |
| operating | 1.25 | 0.9 | 3720 | 57 | 9 |
| system | 0.11 | 0.6 | 9554 | 28 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| who developed operating system | 1.88 | 0.3 | 7030 | 3 |
