In this article, I teach you computer typing lessons. Today we learn about the fundamentals of computers.
What is a computer?
A computer is an electronic device in which the user gives input to it, then the computer process that inputs and gives the desired output.
It is incorrect only when a given input is wrong. A computer is an amazing machine. Basically, there are two types of computers available in the market namely Analog computers and Digital computers.
Analog computers are those computers that give their output with the help of indications. For example, the speedometer in the vehicles, the voltage, and the current indicator in the submersible pumps, etc... These types of computers are old now.
Digital computers are computers that give their output in the form of digits. For example, the digital speedometer in the vehicles, Electric digital meters, etc...
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The digital computers are further classified into a supercomputer, mainframe computers, minicomputers, microcomputers. The computers we generally used in the home come under microcomputers.
How a computer works?
The computer gives output within seconds but here the important question is how it gives output in seconds. I will tell you here, actually, the user gives input to the computer with the help of the input device.
The most commonly used input devices are the mouse and keyboard. This given input is stored in the memory of the computer, then this input sends to the central processing unit where the computer processes the input and gives the required output.
This output is sent to the memory again. The computer then displays this on the output device. The overall process has happened in microseconds.
What is Computer Memory?
Computer stores all its data in memory. Without memory, the computer can not able to start. Memory plays an important role in the computer.
What is RAM?
The long-form of RAM is Random Access Memory. RAM is also called volatile memory because information stored in RAM is available only when the power supply is ON if there are power cuts occurs the all information stored in RAM is deleted automatically.
RAM chips are placed on the motherboard itself, For example, you are typing a letter in Microsoft word and suddenly power cuts occurs then if you are not saved this document then all your document is deleted because letter you are typing is temporarily stored in RAM.
What is ROM?
The long-form of ROM is Read-Only Memory. The name itself shows what type of memory it is. The information stored in this type of memory is not deleted even when a computer is turned off or power cuts occur suddenly. The files in the C drive are stored in this type of memory.
What is Cache Memory?
Cache memory is temporary memory and is used when repeated actions occur. For example, when we working on the computer, we navigate to the same files repeatedly, and for that computer process the same repeatedly.
So with the help of cache memory computer loads those files fastly as cache memory creates temporary files.
Storage Devices:
Storage devices play an important role in the computer. The hard disk is a storage device that is used when we want to store a large amount of data.
The hard disk is also called a magnetic disk. The hard disk has different data storing capacity are available in the market such as 500 GB, 1 TB, and 2 TB.
We can also store data in optical disks such as compact disks and digital versatile disks. Now a day we use Pendrive/flash drive and memory cards to store data. Pendrive is useful we want to transfer data from one computer to another computer.
What are Input Devices?
The device which gives input to the computer is called an input device. Keyboard, Mouse, Scanner are generally used input devices.
What are Output Devices?
The device which gives output is called the output devices. Monitor and printer are generally used output devices.
What is Hardware?
Hardware is a visible part of the computer. We can touch these parts with our hands and see these parts. The parts such as the keyboard, mouse, computer cabinet are considered as hardware.
What is software?
The set of a program is called software. The set of commands is called a program. We cannot see or touch software. Software plays an important role in the computer. The operating system itself is software. We cannot run the computer without the operating systems.
I hope you understand these computer typing lessons. If you like this article, share this article with your friends. Thank You.
I hope you understand these computer typing lessons. If you like this article, share this article with your friends. Thank You.
