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1. Keyboard
This is an input device. Without this hardware, you cannot even enter some data in the computer. With the help of this, we can do all the writing tasks of the computer. What you are reading now is also written with this keyboard. You can also see and touch this electronics devices. It is one of the most used devices. There are also other Hardware components inside it. This device is installed in the USB port.
2. Mouse
It is also known as pointing device and cursor moving device. A mouse can have 2 or 3 buttons. Such as the right, left, and middle buttons (Left key, Right key, Middle key Roller). All these are Hardware one. The mouse is placed on the flat surface or on the mouse pad. It is used to control the cursor.
3. Scanner
This is the external Hardware of a computer. Using a scanner, written papers and photographs can be converted into digital images and stored in memory. Documents can also be scanned and stored in the computer through the scanner. This is called External Hardware.
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4. Monitor
A computer monitor is an electronic device that is used to show output in some computers. It looks exactly like a T.V. A big and good display resolution shows us a good picture. This hardware is of small size in LAPTOP and slightly bigger in Desktop.
CRT Monitor: - These are heavy and large and use a lot of desk space and electricity. This is the oldest used technology. It is based on cathode ray tube technology which was made for television.
LCD Monitor: - There is a type of flat panel display. This is a newer technology than CRT. These monitors use less desk space. It is of less weight. These monitors use less electricity. For a long time, these monitors are being used in laptops and notebook computers, they also work as touchscreens on tablet computers, and mobile phones.
5. Speaker
This is also an External Hardware. Using this we can hear sound. It gives output in the form of sound. Nowadays it remains inbuilt in the system.
6. Printer
It is also an External Hardware. Printer is an output device that prints the information received from the computer on paper. The copy of the output on the paper is called hard copy. Therefore we can say that the information can be stored in the printer itself, so the printer also has a memory from where it prints the results slowly.
7. Motherboard
This hardware is the main part of the computer. You need to open Computer to see it. This is a board called PCB (Printed Circuit Board). This board holds the different components of the computer. And all those components are CPU, RAM, Hard Disk, SMPS port, Graphics card.
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8. CPU (Microprocessor)
The full name of CPU is Central Processing Unit. It is not a hardware itself, there are many small and big hardware inside it. It is also called the brain of the computer. It controls the computer. We do what our mind tells us to do. Mainly its 3 components are ALU(Arithmetic Logic Unit), CU and MU. ALU which is called Arithmetic and Logical Unit. CU Control Unit and MU Memory Unit. ALU arithmetic calculations like Addition, Subtraction, Multiplication and Division. LU performs comparison operation. e.g. Less than, greater than, equal to and Not equal to. MU has primary and secondary memory.
9. RAM
The full name of RAM is Random Access Memory. It is also called Direct Access Memory, this memory is mostly of less size than Secondary Memory in Computer. Like in your mobile it is up to 1GB, 2GB, 3GB, 4GB. This is an electromagnetic disk. It is in hardware Rectangle shape.
10. Expansion cards
Graphics Cards – It looks like HW card, it is inserted in MOTHERBOARD. Graphics card is used to do Image Rendering / Produce on the monitor. Converts the data in such a way and generates signals which is easily understood by your monitor.
The better the graphics card, the better the image is produced. It is necessary to have a Graphics Card for Gamer's and Video Editor dear people. It is installed in the motherboard. Its shape is like a chip.
Sound card – Its other name is audio output device, sound board, or audio card. Sound card is an expansion card and IC. Helps to remove sound. Which we can hear through speakers and headphones.
11. SMPS
The full name of SMPS hardware is Switch Mode Power Supply. This is an electronic circuit. If you buy separately for Desktop, then you will get some square shape box, the same is SMPS. This device gives power to different parts of the computer such as RAM, motherboard, gives power supply to the fan. By the way, electricity goes from the motherboard to different parts.
12. Hard Disk Drive (HDD)
This is a data storage hardware device. Lives inside the computer or laptop. How many files or data or computer programs are stored inside it. The OS is also stored in this HDD. This memory is also known as C drive. After partition, C, D, E drives are also created. Hard drives retrieve data from hard disks, fixed drives, fixed disks, and fixed disk Optical drives and store the data in optical discs such as CDs, DVDs, and BDs (Blue-ray discs). Their storage capacity is very high.
13. DVD DRIVE
DVD Drive is installed in the CPU of every Desktop and Laptop. Which are also called optical drives. Some other names of DVD drive are Disc Drive, Odd, CD Drive, DVD Drive. They are used to store digital data. It is used to play the DATA which is present in DVD, CD in computer.
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