Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
which operating system was released first | 1.73 | 0.2 | 7918 | 79 |
when was the first operating system released | 0.36 | 0.7 | 4346 | 3 |
first windows operating system released | 0.86 | 0.8 | 2318 | 10 |
when was first operating system developed | 1.7 | 0.4 | 1311 | 80 |
which is the first operating system | 0.97 | 0.3 | 9854 | 63 |
when was the first operating system built | 0.6 | 0.7 | 4064 | 58 |
when was the first operating system develop | 0.09 | 0.9 | 2815 | 4 |
first operating system developed by microsoft | 1.51 | 0.5 | 725 | 72 |
who made the first operating system | 0.4 | 0.6 | 4041 | 29 |
when was the first operating system invented | 1.11 | 0.5 | 7388 | 69 |