Basic Introduction of Computer System

Introduction

Introduction to computer systems

The computer is a collection of hardware and software components used to perform a specific operation an an existing hardware. there are several characteristics of a computer systems such as its speed, accuracy etc.

Application of computers

Today, computer are used in various fields and they have becomes an integrated part of our life. Computers are routinely used in the areas of

• Education
• Business
• Industry Automation 
• textile
• Transport
• Navigation
• Weather Forecasting
• Medicine

Classification of Computers

• Micro Computers
• Laptop computers
• work station
• super computer
• hand held computer
• multi core computers

Computers hardware

The computers is mainly to perform various operstion on data. The computers hardware represents the physical elements in the computers. The Blok diagram of a computer 

Inputs\output Devices

The input devices are used to obtain data from the user. For Example of inputs devices are Keyboard, mouse, scanner etc. The output devices are used to deliver data  to the user. The data from the CPU are transferred to the output devices. Monitor, printer etc. are examples of the output devices.

CPU

The central processing unit (CPU) coordinate the complete computer. In the computers, CPU is responsible for performing any operation.

Memory 

In addition to the execution of the operation on the data the computer is responsible for maintaining data. for this, the computer uses memory. The memory is responsible to maintain data and can be represented as M*N size. Thus the memory contains M numbers of location with each location storing a world size of N bbits. On any memory location, either read operation or write operation can be performed. There are two types of main memory

• Random Access Memory (RAM)
• Read only memory (ROM)

Computer Software

Computer software  is a set of programs that can be executed by a processor . There are two types of computers software they are 

• System software 
• Application Software 

System Software

system software is a collection of programs used to perform intended to perform the operation or task for the computer. In general, operating system is considered as system software.

Application Software

Application software is a collection of a programs to perform a particular application. Thy are also called as application and are end-user programs. 

Programming Language

There are Three type of programming languages 

1. Machine-level programming language
2. Assembly-level programming language 
3. High level Programming language