Hardware and Software Components

What are the types of hardware components ?

• Multiprocessor

• Multicomputer

What is multiprocessor system?

• It is also known as tighlty coupled system

• In this multiple processors share the same memory

• Single computers with multiple CPUs

• In this processors communicate via memory

What are multicomputer systems?

• It is also known as loosely coupled system

• In this Each computer has own CPU and memory

• In this multiple computers connect via network

• Multiple computer communicate via network

What is bus ?

It is a shared communication line through which all the nodes are connected

What is Switch ?

Those are the individual wires from machine to machine

Multiprocessor system

• Bus Based

• Switch Based

Multicomputer system

• Bus Based

• Switch Based

What are the types of Switch ?

• Cross by switch

• Omega switch

• Grid switch

• Hyper Cube

What are the software components ?

DOS

NOS

Middleware

What is DOS?

• Full form: Distributed Operating System

• It acts like one single OS of all the computers in the network

• Those are tightly coupled OS and homogeneous multicomputers

• User feels like they are using one computer even though many computers are together

What is NOS?

• Full form : Network Operating System

• In this every computer has its own operating system

• Those are loosely coupled OS for heterogeneous multicomputers

• For Each computer you need to access separately if needed

What is middle ware ?

• Middle ware act as a bridge between Operating system and distributed application

• It makes it easy for apps to talk with operating system

• it hides the complex stuff like communcation between os and dapps