Operating System

Operating System

Merupakan perangkat lunak inti yang mengkordinasikan segalanya di computer

User - Applications - OS - Hardware

System Privilege Layers

• Kernel space ~ dimana os bekerja langsung manage hardware & system resource tanpa batasan.
• User space ~ dimana application bekerja secara terbatas terhasap hardware, jika application butuh akses ke haarware, maka akan melakukan system call.

OS Responsibility

• Process Management ~ create, schedule & prioritize program in cpu
• Memory Management ~ allocate ram to process
• File System Management ~ Organize file into directories
• User Management ~ handle multi user account, auth, permission
• Device Management ~ Load drivers & provide a universal interface

Embededed & IoT Devices OS

• Embedded Linux ~ OpenWrt, Ubuntu Core, Yocto Project
• Real-Time OS ~ FreeRTOS, VxWorks, QNX