What Is a Peripheral Device (Types, and List Of Peripheral Devices)?

A peripheral device is a computer peripheral that connects to the main computer system through a cable, interface, or port. The peripheral device can include various devices that can be used to improve the user’s productivity and performance.

How important are peripherals in computers?

Peripherals are important in most computer systems because they allow the user to input data and commands, as well as control the system. Many different peripherals can be used in a computer. In order to determine which peripherals are most important in your system, you must first determine what type of computer you have. If you have a laptop or desktop system, then all of the peripheral devices that come with it are likely to be considered important. However, if you have an Apple Macintosh or Linux computer, then some peripheral devices may not be as important as others.

Types of peripheral devices

Peripheral devices are devices that are not typically within the scope of a computer system, but which nevertheless may have an impact on the performance of that computer system. These devices may include:


A mouse is a device used to interact with a computer by moving the cursor around on a screen. There are many different mouse types, each with its own advantages and disadvantages. Here are three of the most common types:

The Trackball: This type of mouse is especially popular in desktop environments such as Windows or macOS, because it can be controlled using both hands. It has a small wheel at one end and an analog stick at the other, making it easy to move the cursor around.

The Touchpad: A touchpad is an input device that uses pressure and movement rather than just light touch to interact with a computer. It’s usually found on laptops and desktops and has several buttons at either end to allow you to take various actions, such as launching programs or editing documents.

Keyboard devices

Keyboard devices are commonly used to enter text or control other functions on a computer. There are many different types of keyboard devices, and each has its own advantages and disadvantages. Here are two of the most common types of keyboard devices:

  • The traditional keyboard is a thin, flat piece of plastic that is attached to the computer by a hinge. This keyboard is used to type out text or control other functions with your fingers.
  • A laptop’s numeric keypad is located in the top-left corner of the screen. This numeric keypad can be used to input numbers (for example, for turning on and off lights), select menu options, or perform other tasks on your computer.


The monitor is one of the most common peripheral devices used by users. A monitor is a device that displays information on a screen in front of the user. Some monitors are large enough to accommodate large portions of the screen and provide a variety of viewing angles. Additionally, monitors come in various types, such as TN (truck shaft monitor), IPS (in-plane switching) display, and VA (vertical alignment) displays. There are a variety of monitor configurations: monochrome, black and white, color, and high-definition. Each configuration has advantages and disadvantages. 

The monitor display has a certain resolution, refresh rate, and color depth. These three parameters are most important for the user as they help to determine how well each application can be displayed on the screen. 


Printers are a type of peripheral device that allows users to print documents and produce electronic media. They come in many different shapes and sizes and can be used on a wide range of platforms. Printers are typically connected to computers through serial or parallel ports, allowing them to be used as either input devices or output devices. Printers are built into most computers and can be attached to a computer using serial ports, parallel ports, USB, or some other connection. 

Printers can also be connected directly to the computer’s USB port, which allows the user to print from their computer without having to connect anything else. 


A scanner is a peripheral device that helps you take pictures or scan documents. Scanners come in many different shapes and sizes, so it’s important to find the one that will fit your needs. Some scanners offer touch screens so you can use them without taking your hands off the document you’re scanning. 


A projector is a type of peripheral device that enables people to see images or videos on a large screen. Portable projectors are the most common type of projector, and they can be used in many places such as classrooms, stadiums, and even airports. There are several different types of portable projectors, and each has its own strengths and weaknesses. The most popular type of portable projector is the Projector Tab.


Microphones are an important peripheral device for any musician. They allow you to capture and amplify sound, making it possible for you to record or play your music. There are a variety of microphones available, each with its own unique features and uses. 

Some common types of microphones include condenser microphones, electret microphones, and dynamic microphone. Condenser microphones are the most commonly used type because they offer great quality audio reproduction and can be very sensitive. Electret microphones use electrical charges to capture sound, which makes them small and lightweight, perfect for portable devices. Dynamic microphones use a piezoelectric crystal to capture sound, which gives them the ability to handle high volumes without distortion.

External Hard Disk

There are many types of peripheral devices, each with its own specific purpose. External hard disks are a great way to store your files and data. They come in various shapes and sizes, and they can be connected to your computer using a USB or Thunderbolt port.

There are two main types of external hard disks: portable hard disks and desktop hard disks. Portable hard disks are smaller and lighter, making them easier to carry around, while desktop hard discs are larger and heavier but offer greater storage capacity.

Another advantage of external hard disks is that they can be used with any device that has a USB or Thunderbolt port, which includes smartphones, tablets, gaming consoles, and other laptops. This means that you can access your files from anywhere in the world!

External Floppy Disk

There are a few different types of external floppy disks, and they all have their own benefits and drawbacks.

The most common type of external floppy disk is the 5 1/4 inch drive. This disk is typically larger than most other types, and it’s designed for use with computers that have a 5 1/4 inch drive bay.

The downside to this type of floppy disk is that it’s not as portable as some of the other options. It also doesn’t run on batteries, which means you need to carry an extra power supply with you if you want to use it outside of your home or office. 

Another common type of external floppy disk is the 3 1/2 inch drive. This disk is smaller than the 5 1/4 inch drive and it’s designed for use with portable computers that don’t have a 5 1/4 inch drive bay. 

The advantage to using this type of disk over the 5 1/4 inch drive is that it’s more portable. Plus, because it runs on batteries, you can take it with you wherever you go. 

Finally, there’s the 2 1/2 inch drive. This disk is small enough to fit inside a laptop computer, but its storage capacity isn’t as great as either of the other two options.

External CD-ROM

External CD-ROMs are a popular type of peripheral device because they can be used to store files and Music CDs. They were typically larger and more expensive than other types of storage devices, such as internal hard drives or USB flash drives, but they offered a lot of advantages.

External CD-ROMs were great for storing large amounts of data because they could hold multiple discs that could be accessed simultaneously. This made them perfect for use in multimedia applications like photo editing or video production. Additionally, external CD-ROMs had a lot of built-in features that made them easy to use, such as support for drag-and-drop operations and automatic backup functionality. 

Although external CD-ROMs are no longer widely used, they still have some benefits that make them worth considering if you’re looking for storage space that’s not available on your computer’s internal drive.

Joystick device

A joystick device is a peripheral device used to control a game console, video game system, or another interactive device. A joystick device is a type of input device that uses an extended hand or arm to control the movement of a cursor on a screen. It’s typically used for gaming, although it can be used for a variety of other purposes as well.

There are several different types of joystick devices, each with its own advantages and disadvantages. The two most common are: optical joysticks, and trackballs.

Optical joysticks use light to detect the movement of the user’s hand and arm, which allows them to provide precise control over the cursor on the screen. They’re usually the most accurate and comfortable option, but they tend to be less versatile than other types of joystick devices. 

Trackballs are similar to optical joysticks in that they use light to detect movement, but they also have a ball rolling around inside a cylinder that tracks your hand movements. This makes them more reliable than optical joysticks when it comes to tracking fast movements, but they’re less versatile since you need to keep your hand stationary while playing games with a trackball. 


A modem is a peripheral device that connects to the computer to allow communication. A modem can be used for communication with other devices on the network, such as a web browser, email client, or printer. A modem also can be used to connect to the internet.

Network Interface Card

Peripheral devices like network interface cards (NICs) are necessary for your computer to connect to the internet. They allow your computer to send and receive data over the network, and they play a vital role in enabling you to access the internet from anywhere.

There are different types of NICs, each with its own set of features and benefits. For example, an Ethernet NIC is designed for connecting computers together over a wired network, while a GbE NIC is better suited for larger networks that use multiple routers.

It’s important to choose the right NIC for your needs, as not all NICs are compatible with every type of network. If you’re not sure which one is best for you, then you can try contacting your local computer store or online retailer to see if they have any recommendations.

Flash Drive

Flash drives are a great way to store your files and access them anywhere you have an internet connection. They’re also small enough to carry around with you, so you can always have some extra space available for your files.

There are a few different types of flash drives on the market, but the most common is the USB flash drive. These drives use a standard USB port to connect to your computer, and then let you access your files as if they were stored on your computer.

Another type of flash drive is the SD card flash drive. This type of drive is designed specifically for use with digital cameras and other mobile devices. It has a larger storage capacity than regular USB flash drives and is more compatible with certain types of cameras and software.

Finally, there are mirroring flash drives. These devices allow you to copy or mirror your entire hard drive onto a smaller flash drive without losing any data. This is useful if you want to take your work home with you, or if you just need extra space for storage purposes.

Micros SD Card Reader

Peripheral devices are devices that are not essential for the operation of a computer but are used instead to add extra features or functions. 

One peripheral device that is often used with computers is a micro SD card reader. This is an essential device for anyone who wants to store their photos, videos, and other files on their computer. It allows them to easily transfer these files between their computer and their memory card.


In conclusion, peripheral devices can be a great addition to any computer system. They offer a variety of features that can be used to improve the user experience and can make it easier for users to access information and work on tasks.