Introduction to Operating Systems is a graduate-level operating systems beginning course. This course covers the fundamental operating system ideas, techniques, and implementations. Concurrent programming (threads and synchronisation), interprocess communication, and an introduction to distributed ...
Basic of Operating System
➔ In the previous lecture we discussed the introduction of Operating System, what is
operating system, what the structure, and functions of the Operating System, and at the end
advantages and disadvantages of Operating System.
➔ In this lecture we will see some basics of the operating system that you need to how to
understand how Operating System work.
Computer System Operation:
➔ In the Computer system Operation we will be seen the structure of Operating system. To
understand how an Operating system work we need to learn some basic about computer
system operation.
➔ A modern general-purpose computer system consists of one or more CPUs and a number of
device controllers connected through a common bus that provides access to shared
memory.
Figure 1.2.1 Computer System Operation (This image needs to be shown in the background of video ))
➔ The CPU means it is the main part of the computer, the brain of the computer. It is the
Processing Unit all of the computation, processing, and calculation is done by the CPU.CPU is
not a box that you can see beside of Monitor, this box consists of a CPU, Motherboard,
buses, Memory, etc. the CPU is a small chip that is embedded in your motherboard. In
modern computers, we have one or more CPUs embedded in the motherboard.
➔ In this diagram you can see the number of devices connected to the CPU like Disks, Mouse,
Keyboard, Printer, and Monitor. All these devices are connected through Controller and the
controllers are responsible for how the devices work. For example, all Disks are connected to
Disk controller, mouse, keyboard, and printer are connected to the USB Controller. CPU is
connected along with this all controllers to shared memory via a Common Bus.
Some Important Terms
1. Bootstrap Program:
-The initial program that runs when a computer is powered up or rebooted.
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