What is meant by computer system

              
                                 What is meant by computer system

                     (कंप्यूटर प्रणाली से क्या मतलब है?)

Actually the word “computer” means the computer system, which is generally the combination of one or more input device, output device, and a processing unit.

The Three Equipment Functions of a Computer System

A. Data Collection Data Input 

B  Data Processing   Data Processing 

C. Data Output Data Output 

Input (Data Input): Input is the raw information entered into a computer from the input devices. It is the collection of letters, numbers, images etc.

Process (Data Processing): Process is the operation of data as per given instruction. It is totally internal process of the computer system. 

Output (Data Output):: Output is the processed data given by computer after data processing. Output is also called as Result. We can save these results in the storage devices for the future use.

IPO CYCLE: Computing systems require ways of getting data inputs to the system, so that they can process or act on the inputs, and can output results to various devices. To save time in the input stage, storage allows computers to save and access data in computer formats for quicker retrieval later. In a personal computer, the parts of this IPOS cycle correspond to specific hardware devices

The block diagram of computer

Central Processing Unit (CPU)

It stands for central processing unit. It is brain of computer also known as system unit or processing unit. It consists following components. 

Arithmetic logic Unit: It performs all arithmetical as well as logical operations such as addition, subtraction, multiplication & division. Also it performs the comparison between the entities & thus help in decision making to the computer. 

Control Unit: It controls the flow of instruction within the system. CU gets the program instruction from memory & executes them one after another. 

Memory Unit: It saves the instructions that are being executed for the future use. Each instruction takes certain memory for its proper execution.