Operating System Basics

Computer architecture

Operator---> Register: internal operator for temporary storage of data->l1 (L1I+L1D)->l2->l3-> memory

Controller: Control memory and operator communication

Storage: memory, planar addressing

Input device and output device (IO device) and user interaction

Post:power on Self Test (power-on bootstrap)---BIOS map loads into memory---CPU reads from memory into BIOS initialization system device

Program: Instruction instruction+ data

Interrupt:cpu Knowing the IO device type via interrupt Controller

Machine language (binary)

Microcode (assembly language, chip customization), compiler-based binaries

Advanced language->api (functional interface provided by Assembly language), assembly language, binary

Hardware architecture

ARM x86 amd64 Itanium Celeron Pentium Core Corei7 Alpha Ultrasparc Power

CPU Time Shard Slice multitasking

Memory virtual address space plane address

program, load memory CPU execution--process (with life cycle)

Operating system

Hardware->kernel->system Call->libraryapi->app (Shell:cli,gui man-machine Interface)

In-memory data: Bios+kernel+app

Kernel features

Process Management memory Management hardware driver file system network functional security mechanism

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Operating System Basics