How to learn Computer?
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| How to learn Computer? |
Introduction to computer
The history of computers is very old. Computers were introduced in the nineteenth century. The father of the computer is believed to be "Charles Babbage". Because he invented the 1833 Analytical Engine. Which is an important part of a computer. You will be surprised to know here that in the beginning the computer was designed to do calculations only. And that's why it is also called calculus in Hindi. Whereas today we see that the computer is capable of doing many types of work today. Today, computers are used in every sector. Such as in designing, storing data, communication, education sector, and many other purposes.
Full form of computer
C - Commonly
O - Operating
M - Machine
P - Particularly
U - Used in
T - Technology
E - Electronic
R - Research
What is a computer?
A computer is a machine that consists of many small devices. A computer cannot be complete without all these devices. And the computer is not capable of doing any work. Now we know about computer equipment and programs.
In other words, the Computer is a versatile electronic machine man has ever created. Computer have made a great impact on our daily life.
The main two parts of a computer are software and hardware. No computer can be used without both of them.
1) Monitor
A monitor is an output device. Which we see all the results, whatever command we give to the computer, we show it through the monitor. And its size can be small or big. Today's modern monitor uses LED and LCD.
2) Keyboard
Through the keyboard, we instruct the computer and the computer gives us the result. The keyboard is an input device. It has a lot of buttons to give commands to the computer. And they are used for different purposes.
3) Mouse
A mouse is an input device used to instruct a computer. With this, we give the quick command to the computer and which saves time.
4) Printer
Through Printer, we can print any document and get it on paper. The information received on paper by this is called hardcopy. And the documents which remain in the computer are called softcopy. In today's time, we can also get color printouts.
5) Speaker
Through the speaker we can hear the voice from the computer It is also an input device. It is through this that we hear the sound of songs and games playing in the computer.
What is CPU?
CPU (Central Processing Unit):-
CPU is the brain of the computer system. In the human body, all the major decisions are taken by the brain, and all other parts of the body function as directed by the brain.
Similarly, in a computer system, all major calculations, manipulations, and comparisons are made by the CPU. The CPU is also responsible for all other units of the computer system.
ALU- Arithmetic and Logic Unit
CU- Control unit
Memory Unit
Arithmetic and Logic Unit:-
All calculations including comparisons are made by the ALU. That data and instructions, stored in the primary memory prior to processing are transferred to the ALU where processing takes place.
Control Unit:-
The Control Unit is the coordinates all of the CPU activities. Uses programming instructions, it controls the flow of information through the processor by controlling what happens inside the processor. We communicate with the computer through programming languages. Example C++, HTML, JAVASCRIPT, COBOL.
What are hardware and software in computers?
A computer is made up of many small machines, without which the computer is not capable of doing any work. Any computer consists of both hardware and software programs. Over time, both software and hardware have changed.
What is hardware?
Hardware All the equipment related to the computer which is physical and which can be seen or touched is called hardware. All these make a computer. It has hardware devices of all computers such as monitor, mouse, keyboard, (CPU), printer, and speaker.
What is software?
The software is inserted into the hardware. Software is a set of all programs and instructions by which the computer works. A computer cannot be used without software. The software cannot be touched or viewed. A computer without software is just like a part. If your computer does not have software, then you cannot get the computer to do any work.
Types of software
System software can be designed as the software so that it can control and work with computer hardware. It works as an interface between the device and user. Generally, the system software performs the following functions
It communicates with hardware devices, control and monitors the proper use of various hardware like CPU, memory, peripheral devices like monitor, printer, and so on.
Example:-
- Operating System
- Programming Language Translator
- Communication Software
2)Programming Software
This type of software offers the user several tools for writing computer programs in different languages. some basic tools used in the programming software are assemblers, compiler, and interpreters, etc.
Compiler: The compiler makes the end code efficient which is optimized for execution time. It is also used to transform source code written in a high-level language into low-level machine language.
Assemblers: It changes a program written in assembly language and is effectively a compiler for the assembly language.
Interpreters: It is a computer program, which converts any high-level program statement into machine code.
3) Utility Software
This is a kind of software designed to help, analyze, configure, optimize and maintain the computer. If we found any problem related to the system arises, then we can solve it by use of utility software for example antivirus.
Types of Hardware
1) Input Device
Devices that access the user's messages to the computer and then the computer does its job.
example: Keyboard, mouse, camera, joystick, scanner, etc.
2) Output Device
Output devices are any peripherical device that receives output from the computer and displays it.
example: Monitor, Printers, 3D printer, Projectors,
3) Internal Parts
The parts of a computer that are inside the CPU cabin are called internal devices. A box is needed to protect them and to function properly. Which is called the CPU cabin.
Example: Motherboard, RAM, SMPS, Hard Disk, etc.
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