| need history of ram | 1.64 | 0.7 | 5239 | 19 | 73 |
| what is the history of ram | 0.87 | 0.4 | 5381 | 26 | 41 |
| history of ram memory | 0.75 | 0.8 | 7385 | 21 | 58 |
| when was ram invented | 1.42 | 1 | 4953 | 21 | 59 |
| when did ram exist | 1.24 | 0.1 | 1186 | 18 | 15 |
| when did ram start | 0.33 | 0.6 | 7848 | 18 | 43 |
| when did ram become a make | 0.31 | 0.3 | 5329 | 26 | 40 |
| where did ram originate | 1.71 | 0.4 | 4371 | 23 | 70 |
| did ram really existed | 1.81 | 1 | 4158 | 22 | 69 |
| when was ram founded | 1.56 | 0.5 | 6794 | 20 | 97 |
| when was ram added | 0.72 | 0.8 | 3039 | 18 | 46 |
| when was ram made | 0.41 | 0.5 | 9411 | 17 | 15 |
| years of the ram | 0.87 | 0.8 | 7035 | 16 | 9 |
| the evolution of ram | 0.04 | 0.1 | 7649 | 20 | 1 |
| what year did ram start def | 0.87 | 0.9 | 834 | 27 | 51 |
| time period of ram | 0.61 | 0.1 | 2157 | 18 | 87 |
| important details of ram | 1.59 | 0.1 | 4817 | 24 | 13 |
| who put the ram | 0.53 | 0.6 | 6898 | 15 | 79 |
| when did ram live | 0.44 | 0.6 | 6056 | 17 | 66 |
| what did ram do | 1.73 | 0.1 | 4998 | 15 | 58 |
| when did ram use def | 1.69 | 1 | 6598 | 20 | 48 |
| when did lord ram exist | 0.93 | 1 | 9875 | 23 | 84 |
