Explain the block diagram of computer system
Answers
There are 5 basis components of computer, which helps computer system to run properly without any interruption. A computer system is designed in such a way that, every byte of information inputted should be processed properly, Such that user should get the required output. A computer system data transferring is very fast and efficient, so it takes a time less than a second to process and show the output.
The units of computer are very important for running computer system properly. The information transferring in a computer system is done by binary codes. Computers can understand only 0,1. There is a particular binary code for each of the letter, symbol, number. This numbers are converted by computer's Arithmetic Logic unit. To understand the working of computer is not easy, If we show it with the help of it's units and functions, then it will be easy to understand.
5 Basics components of computer:
i) Input Unit
Data and instructions should be first enter in the computer system to get the task done. Without entering any input in the computer system, computer cannot do any task and any function.
Eg: If we move our "mouse" from one position to other, then the data in the form of input is sent to the computer unit and processor. Processor processes the information and gives us the result. To know, where we are browsing, there is inbuilt function of mouse, this helps users to know where the mouse cursor is.
Suppose you click on start menu in computer using your mouse, then the information in the form of binary code is sent to the processor. Processor gives the output on the monitor. And, hence we can see our start menu.
- Input units reads the data provided from external environment.
- This data in the form of binary code is sent to the computer unit.
- Computer unit processes the information and provides the necessary output to the user.
ii) Output unit
The output unit is reverse of the input unit. When the processor sends the output to the output unit. Then the output unit converts the information provided by computer system from binary language to humans language. In this process, data is sent in external environment like monitor and sound.
Eg: When input units send the request of opening any webpage to computer system, computer system loads the webpage in memory and it is later provided to output unit. And hence, output unit like monitor can provide us the webpage interface.
- It accepts the information provided by computer system in binary codes.
- But, we humans can't understand that language, So, Output unit converts the information from binary language to Humans language.
- Output unit includes Monitor, Sound system etc.
iii) Storage unit
When the data and instructions are entered in the computer system using input system, the computer stores that data before processing it and giving it to processor. When the computer processes our data and instructions, then it provides this data to the output unit. But, the provided data is also stored in somewhere in the computer system; To perform this all works and functions, Storage unit of a computer system has been designed.
- Storing the data and information in memory provided to output unit as a history.
- Processing the files required to output unit while using programs, applications and games from storage devices.
IV) Central processing unit (CPU)
CPU is the most important component of the computer system. It controls the all internal and external devices and their functions. Parts like motherboard, ram, storage device, processors are present in this CPU. CPU performs all the Arithmetic and Logical operations of computer. In short, The control Unit and the Arithmetic and Logic unit of a computer system joined together is called as "Central Processing Unit".
- Arithmetic logical unit and Logical unit are the important components of this system.
- Architecture of computer is designed in this CPU, such that, only supported devices can perform the operations. Like CPU designed by IBM cannot be used to run Mac OS.
V) Arithmetic and Logic unit (ALU)
All calculations, comparisons, processing and tasks are done in ALU. It consists of circuits in which arithmetic operations like addition, subtraction, multiplication etc are performed. While processing the data, ALU receives the data from the temporary storage. In temporary storage, their is a function called as "register". This register is very high speed memory which controls all the functions and provides the data to the ALU.
- ALU is an important component of CPU.
- ALU receives the data for processing from the temporary storage from the files called as "registers".
- All processing and computations are done by the ALU.
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A block diagram of a computer is a visual representation of how a computer operates on the inside.
Explanation:
Computer systems are mainly composed of three components, which are central processing unit (CPU), input device, and output device. There are two parts of the Central Processing Unit (CPU): the arithmetic logic unit (ALU) and the control unit (CU).
A set of instructions is represented as raw data and stored in the computer memory using the primary and secondary storage devices. In a computer, the Central Processing Unit (CPU) is responsible for the processing of all user-provided information. Without the CPU, the user is unable to get the desired results.
Data is entered into the computer system by way of input devices such as the keyboard, mouse, etc. This set of instructions is then processed by the CPU, and the result is produced by the computer system. Computers can display output to the user using such output devices as monitors, printers, etc.
- CPU (Central Processing Unit)
- Storage Unit
- ALU (Arithmetic Logic Unit)
- Control Unit
1. Central Processing Unit (CPU)
All calculations and comparisons are carried out inside the CPU, and it is also responsible for activating and controlling other components. This unit is composed of two major components, which are the arithmetic logic unit (ALU) and the control unit (CPU).
The following are brief descriptions of the arithmetic unit, logical unit, and control unit:
2. Control Unit
The control unit (CU) is the component of the computer system that controls all the activities and operations. It receives instructions or information directly from the main memory of the computer system.
3. Arithmetic and Logical Unit
The arithmetic logic unit is used to perform arithmetic operations like addition, subtraction, multiplication, and division, as well as logic operations for comparing.
4. Storage Unit
Data or instructions are stored in the computer system's storage unit. In other words, the computer system's storage unit provides storage space for the data or instructions. The information or data is saved or held in computer memory.
