Video narration
Phone ta chalu kortei apnar Android-er home screen jole othe, apni ekti app kholen, onnotite jan, volume koman - shobkichu jeno nijei thikthak cholche. Kintu ei appgulo-i asal system noy. Niche ache operating system, device-er odrishyo manager. Apni nirdesh dile se app chalu kore, file guchiye rakhe, ar porda, memory, speaker, camera-r moto hardware-ke kaj koray. Orthat byaboharkari, app ar jantrer majhe onubadoker moto kaj kore se. Tai boier chart-e device onujayi bhag dekha jay: desktop computer, mobile, server, ar embedded jontra. Ekek kajer jonno ekek operating system beche neya hoy. Desktop-e Windows ba macOS, abar Linux kingba ChromeOS-o thakte pare. Egulo app noy; puro device chalanor alada byabostha. Chart-er shotangshogulo-o chirosthayi bishwosotto noy - segulo oi utser shomoy, jayga o hishaber opor nirvor kore. Tai mone rakhun: phone-er home screen-e dekha app noy, operating system-i byaboharkari, app ar hardware-ke eksathe kaj koray.