| Twin logic gates: improved logic reliability by redundancy concerning gate oxide breakdown Recent countries visiting this post |  |
 | 3 | United States |
 | 3 | |
 | 2 | China |
 | 1 | Canada |
 | 1 | Sri Lanka |
| Twin logic gates: improved logic reliability by redundancy concerning gate oxide breakdown Recent countries visiting this post | |
| 3 | United States |
| 3 | |
| 2 | China |
| 1 | Canada |
| 1 | Sri Lanka |