Overview

What's an Operating System

Operating System Functions

Computer System Structure

Operating System's Role : User View

Operating System's Role : System View

Quiz#1

Operating System Definition

Computer System Organization

Quiz#2

Computer Start-up and Bootstrap

Interrupt

Quiz#3

Dual-Mode and MultiMode Operation part#1

Dual-Mode and MultiMode Operation part#2

Quiz#4

Storage Structure part#1

Whey Secondary Storage?

Main Memory and Instruction Cycle

I/O Structure

CPU and Device Controllers

Typical I/O Operation

Computer System Architecture

Multiprocessors Types

MultiProgramming

Time-Sharing Systems

Process Concept

Quiz#5

Process Scheduling

Interprocess Communication

Threads

LAB#1 : DOS Commands Part#1

LAB#2 : DOS Commands Part#2

LAB#3 : DOS Commands Part#3

LAB#4 : DOS Commands Part#4

LAB#5 : DOS Commands Part#5

CPU Scheduling

First Come First Served Algorithm -FCFS

Shortest Job First Algorithm

Shortest Job First Algorithm - Example#1

Shortest Job First Algorithm - Example#2- Non-Preemptive

Shortest Job First Algorithm - Example#2-Preemptive

Shortest Job First Algorithm - Pros and Cons

Priority Scheduling Algorithm

Priority Scheduling Algorithm Example#1

Priority Scheduling Algorithm Example#2 - Non Preemptive

Priority Scheduling Algorithm Example#2 Preemptive

Pros and Cons of Priority Scheduling Algorithm

Round Robin Algorithm

Round Robin Algorithm Example

Context Switch

Round Robin Algorithm Pros and Cons

Multilevel Queue Scheduling

Multilevel Feedback Queue Scheduling

Multilevel Feedback Queue Scheduling Example - Part#1

Multilevel Feedback Queue Scheduling Example - Part#2

Multiple-Processor Scheduling

CPU Scheduling Examples

OSSIM

FCFS Java Code

The DeadLock Problem

System Model

The Deadlock Characterization

Resource-Allocation Graph

Methods for Handling Deadlocks

Deadlock Prevention :Mutual Exclusion , Hold and Wait

Deadlock Prevention :No Preemption

Deadlock Prevention :Circular Wait

Overview and Memory Protection

Address Binding

Swapping

Contiguous Memory Allocation

Allocation Problem Solutions

Memory Allocation Example

Fragmentation Problem And Solutions

Paging

Logical To Physical Addressing

Paging Protection and Segmentation

Exercises

Introduction To Linux and JS/UIX

pwd , cd , ls

ls with ls-a and ls-l

mkdir and cp

Linux Commands Part#2

Linux Commands Part#3

Linux Commands Part#4

Introduction to Virtual Memory and paging

( Page replacement algorithms ( FIFO , OPR , LRU

Virtual Memory Exercises : Part#1

Virtual Memory Exercises : Part#2

Virtual Memory Exercises : Part#3

Disk Drive

Disk Structure

Disk Scheduling

FCFS Disk Scheduling Algorithm

SSTF Disk Scheduling Algorithm

SCAN Disk Scheduling Algorithm

Disk Scheduling Algorithms Full Example

Introduction

Directory and Disk Structure

Disk and File System Structure

Disk Allocation Methods

Overview

Interaction Btw CPU and I/O Device