1. Electronics: Hauv cov khoom siv hluav taws xob, tus lej PIN feem ntau siv los txuas cov laug cam thiab lwm yam khoom siv, cov roj teeb, thiab roj teeb. Lawv xa cov paib hluav taws xob thiab tam sim no, ua rau lub cuab yeej ua haujlwm kom raug.
2. Mechanical Devices, PIN headers tuaj yeem siv tau kom ruaj ntseg thiab txuas ntau yam sib xyaw, xws li cov zog, thiab cov siv tawv, thiab cov siv tawv. Qhov no pab txhim kho qhov ruaj khov thiab kev ntseeg tau ntawm cov khoom siv.
3. Kev kho mob: Hauv cov khoom siv kho mob, tus lej PIN tuaj yeem siv tau los txuas thiab ruaj ntseg ntau yam sib txawv, xws li tus kheej, thiab koob hmoov. Qhov no txhim kho qhov ua kom yog thiab kev nyab xeeb ntawm cov khoom siv kho mob.