Computer Fundamentals Index

Computer Introduction Types of computer Characteristics of computer Uses of computer History of Computers

Computer Languages

Low Level language Middle level Language High level language

Computer Generation

Generation of Computers First Generation of Computer Second generation of Computers Third generation of Computers Fourth generation of Computers Fifth generation of Computers Sixth Generation of Computer

Peripheral Devices

Input devices Output device


Block diagram and basic components Control processing unit (CPU) Software Hardware


Computer Memory Registers Memory Hierarchy RAM Vs ROM Understanding file sizes (Bytes, KB, MB, GB, TB, PB, EB, ZB, YB)

Computer Network

Types of Network Types of Area Networks (LAN, WAN, MAN) TCP Flags

Computer Virus

Computer Virus

Computer Ports

Computer Ports


How to hack a computer How much do Computer Programmers make How does a Computer work How to associate a file with a program How does a computer convert text into binary How does a computer process data into information How to fix a CD-ROM DVD How to fix the no input signal How to install computer memory How to associate a file with a program How to log out of your operating system How do I change my name on Google How to installation or uninstallation Microsoft Paint How to fix a not a valid Win32 application error How to fix missing Microsoft Windows .dll files How to use a computer keyboard How to erase my hard drive and start over How can I test how many words I can write a minute How to shut down a computer How do I open and edit the Windows registry How to edit the registry from the command line How to restart Microsoft Windows How to install a computer processor How to open Microsoft Paint How to fix problems in Windows after installing new software How to enable or disable the preview pane of Microsoft Outlook How to open a Microsoft .wps or Works file in Word How to view the HTML source code in Microsoft Word How to View or Change the Screen Resolution of a Monitor How to Connect and Install a Computer Keyboard How to Delete Temporary Files in Windows 10 How to determine Which Version of Microsoft Office I'm using How to find out how much hard drive space is available How to Fix PC Stuck on Verifying DMI Pool Data How to choose which items show in the notification area How to find similar images using Search by Image How to fix Low Memory and out of memory errors How To Replace the CMOS Battery How do I Update my Antivirus Program How to fix a general protection fault How to Identify problems in the Windows Device Manager How can the Base be Shown How to test if a Website or Web Page is down How Much is 1 Byte, Kilobyte, Megabyte, Gigabyte, etc How to fix a CMOS checksum error How to Fix a Windows CD-ROM, DVD, or Disc Drive Issue How to Open Safe Mode How to Password Protect Files and Folders in Windows How to Reset CMOS or BIOS Settings How to use Computer Keyboard How to create a text file How to enable or disable DHCP in Windows How to test computer memory to determine if its bad How do double space or change line spacing in Microsoft Word How do I know if I have Windows Administrator Rights How many cores does my computer have How to Create a Directory or Folder How to Enter and Exit the BIOS or CMOS Setup How to change Windows Compatibility mode How to clear your internet browser history How to Connect Computer Speakers How to Copy a Web Page Link or URL How to install a Hard Drive or SSD How to Open the Windows Control Panel How to split a screen in Windows How to copy text from a scanned PDF


Who invented Computer What are the advantages of the Internet? What are the disadvantages of the Internet? Is my computer 64 bit? What is Edge Computing? What is a Router? What is Monitor What is Printer What is a Web Browser What is Microphone What is a Webcam What is PC What is Keyboard What is Motherboard What is WAP What is URL What is a Digital Assistant When was the first Computer Invented What is Modem What is Firmware What is Imperative Programming What is Protocol What is Safe Mode What is Device Driver What is Hybrid Topology What is Mesh Topology What is Procedural language What is a hyperlink What is a Username Who invented the Internet What is Video Card What is Sound Card What is Binary What does Alt+B do What does Alt+D do What does Alt+E do What does Alt+Esc do What does Alt+R do What does ALT + Q do What does Alt + Tab do What is Data Manipulation What is a touch screen What is Back Panel What is Analog Monitor What is AR lens What is an ATX Style Connector What is a File System What is Hard Disk Drive (HDD) What is a boot device What is accessibility What is Line In What is network Interface card (NIC) What is Optical Disk Where can I ask questions on the internet What is Auto Rotate What is CAD (Computer-aided design) What is Cable Modem What is Home Page What is boot menu What is braille reader What is flash memory What is Windows What is Clipboard What is Cyber Warfare What is Myspace Why has my IP address changed What is Jacquard Loom My computer is running slow, what steps can I do to fix it What is a Kensington Lock What is a multicore processor What is automation Are smartphones and tablets computers What is a Login Script What is a Loosely Typed Language What is Multitasking? Why my computer monitor shows no display or black screen What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is the Pg Dn Key (Page Down Key) What is the Pg up Key (Page up Key) What is Palmtop Computer What is a Processing Device What is a Print Preview What is the Print Screen Key What can I do if my computer or laptop is lost or stolen What is a Model Number What are the currently available antivirus programs What are Toggle keys What is a Case fan What is a Silicon Chip What is a Slate PC What is a TAB stop What is an Octothorpe What is Task Pane What is Task View What is the svchost.exe file used for in Windows Where can I find free online virus scanners Why am I unable to increase the resolution in Windows What is Autofill When I click my mouse, it sometimes double-clicks What is Scratch What is UDIMM What is MsConfig What is an Expansion Card What is an Executable File What is an Elevated Command Prompt What is an AC Adapter What is AIMBOT What is a Software Suite What is a LED Monitor What does Alt + X do What does alt + space do What does Alt + O do Now that I’ve got a Computer, what can i do What is a Punch Card What is RDIMM What is Select All What is Serial number What is Thermos flask What programs can I use for speech recognition What are the Advantages of Computers What are the Disadvantages of Computers What does Alt + T do What Hardware Device Drivers should be Updated What is a Desktop What is a Ring Topology What is CMOS What is a Directory What is a Mechanical Mouse What is a Plotter What is a Variable What is an Icon What is Data What is HDMI What is Remote What is Right-Click What is SMPS Why does my Laptop not turn on What is a Copyright What is a Cordless Mouse What is a CSV file What is a Joystick What is a Start Button What is a Taskbar What is an Alignment What is an Output Device What is Cat 5 What is Google Chrome What is Post What are Recordable DVD Drives What Does Alt + F4 Do What Does Alt + L Do What is a bit (Binary Digit) What is a cable What is a Calculator What is a capacitor What is a Cold Boot What is a Dialog Box What is a Dual-boot What is a Slide What is A4 What is AM What is Barcode Reader What is EHCI What is a Header What is a Joystick What is a Secondary Storage Device What is Access Time What is Account Sharing What is an Asterisk What is Asynchronous DRAM What is Back Quote What is BIOS What is Borderless Printing What is Case Badge What is CD-ROM What is Chat Slang What is Composite What is RJ Cable What Are Bottom Row Keys What is SAN What is Tray What is VDU What Does Alt + M Do What Does Alt + P Do What is a Cell What is a Command Key What is a key Combination What is a Menu Bar What is a Startup What is a T What is Chat What are the F1 through F12 keys What does Alt + Enter do What Does Alt + Home DO What does Alt + R do What does Ctrl + B do What Does Ctrl + Enter Do What Does Ctrl + R Do What does Ctrl + G do What does Ctrl + 9 do What does Ctrl + End do What does Ctrl + O do What Does Ctrl + P do What Does Ctrl + Q do What is a Colon What is a Core What is Apple Touch Icon What is Clock What is Code What is Computer Crime What is Ctrl What is DAT What is Data diddling What is Date Why won't my computer turn on What Does Alt + N Do What does ctrl + 2 do What does ctrl + space do What does Ctrl + W do What does Ctrl + T Do What Does Ctrl + 2 do What does Ctrl + 5 Do What are the most common file types and file extensions What are Sticky keys What Does Ctrl + Shift + Esc Do What is Settings What is Task Manager What is Taskbar What is a DNS Resolver What does ctrl + 1 do What does ctrl + 0 do How to install software What is a Folder What is a Legend What is a MAC Address What is a Path What is a Ruler What is a Toolbar What is an Intranet Meaning and Differences with Internet What is an SSD What is Inheritance What is Tablet What is Depth What is Docking Station What is Double Click What is a Solid Ink Printer What is a Temporary File What is Backup and Restore What is Electronic Payment Systems Eps What is Marshalling


Difference between hardware and software Difference between multiprocessor and distributed systems Difference between Desktop and Laptop Difference between File and folder Difference between Hard Copy and Soft Copy Open Source Programs vs Closed Source Programs Difference between Optical Fibre and Coaxial Cable Difference between Website and Webpage Difference between Classes and Objects Input VS Output Difference between Primary and Secondary Storage with Examples


Quantum Computing Computer Software Autoexec.bat and config.sys info Update an Antivirus Use of Internet Advantages and disadvantages of Email Computing Power Internet Explorer Shortcut Keys Advanced Encryption Standard (AES) Augmented Reality Infrastructure Readiness Check Top 10 Internet tips and tricks Introduction and Features of FoxPro Features of Multimedia Top 10 online services and applications Receiving S.M.A.R.T. status bad backup and replacing error Version Control System Uninstalling Software or Apps in Windows Data Warehouse Increase or decrease font size in Word using keyboard shortcuts Mouse not detected or working in Windows Computer Cleaning Information and Steps Function Keys on Keyboard Windows 7 Alt+Tab won’t stay on top or stick 10 Essential Examples of Web Browsers Binary Subtraction using 2’s Complement Case Sensitive Languages Computer Pioneers and people who are CEO Microsoft Word Shortcut Keys Parts of Computers Names, Definitions and Images ROM and its Types Basics of Information Technology Characteristics of a Good Software Design Characteristics of Management Information System Classification of Management Information System Implementation of MIS Input Devices of Computer Definition Limitations of Management Information System 3 Types Of Network in Computer Block Diagram Of Control Unit Difference Between Computer and Embedded System Difference Between Hard Disk and Floppy Disk Abstraction in OOAD Hardware and Software Devices Optomechanical Mouse CMOS Memory What is a Terminal? What is Graphic Design? What is Load? What is Passcode? What is Reboot? What is Registry? What is Safe Mode? What is Standby? What is SYN (Synchronize)? What is Task Manager? Attribute Computing BPS in Computer Bulletin Board System Light Pen Input Device 3 TYPES OF NETWORK IN COMPUTER Block diagram of control unit What is a Solid Ink Printer? What is a Temporary File? What is an App launcher? What is Backup and Restore? What is a Tab Character? What is the Core i3? What is Paint? What is a Workbook? Advantages and Disadvantages of Online Education What is a String? What is a VDU (Visible Display Unit)? 50 Uses of Computer What is Workspace? What is a Procedural Language? What is VGA (Video Graphics Array)?

Input Devices of Computer Definition

In today's digital age, computers play a critical role in our day-to-day lives. They are employed in communication, amusement, education, and employment. Input devices are an essential computer system component that allows users to provide information and interact with the computer. They are used to enter data or commands into the computer, which are processed and translated into meaningful information. Input devices come in various forms and have evolved over the years to meet the changing needs of users. In this article, we will explore the definition, types, and examples of computer input devices.

Definition of Input Devices:

Input devices are hardware components that allow users to input data or commands into a computer system.

They enable users to provide instructions or input information to the computer, which is then processed by the computer's central processing unit (CPU) to generate output. Input devices are crucial for human-computer interaction, as they facilitate communication between the user and the computer system.

Types of Input Devices:

There are several types of input devices used in computers. Let us take a closer look at some of the most common types:

1. Keyboard: The keyboard is one of the most widely used input devices. It consists of keys to input letters, numbers, and symbols into the computer system. Keyboards can be wired or wireless and come in different layouts, such as QWERTY, AZERTY, and Dvorak. The QWERTY layout is the most used keyboard layout and is named after the first six letters on the top row of the keyboard. Keyboards are used in various applications, including word processing, data entry, gaming, and programming.

Example: A user types a document using a keyboard to input letters, numbers, and symbols into a word processing software.

Input Devices of Computer Definition

Source: white corded computer keyboard on white surface photo – Free Blue Image on Unsplash

2. Mouse: The mouse is another popular input device used in computers. It is a pointing device that allows users to move a cursor on the computer screen to interact with graphical user interfaces (GUIs) and select options. The mouse typically has buttons that perform various functions, such as left-click, right-click, and scroll. The mouse is widely used in applications that require precise pointing and clicking, such as graphic design, gaming, and web browsing.

Example: A user moves the mouse to control the cursor on the screen and clicks on icons or buttons to select options or perform actions in a web browser.

Input Devices of Computer Definition

Source: black cordless computer mouse on black surface photo – Free Monochrome Image on Unsplash

3. Touchscreen: A touchscreen is an input device that allows users to interact with a computer system by touching the screen directly. Touchscreens are commonly used in smartphones, tablets, and interactive kiosks. They can detect the position of a user's finger or a stylus on the screen and translate it into commands or input data. Touchscreens can support various gestures, such as tapping, swiping, pinching, and rotating, which enable users to interact with graphical elements on the screen.

Example: A user touches the screen of a smartphone to open an app, swipe through images, or zoom in on a map.

Input Devices of Computer Definition

Source: silver iPhone X photo – Free Iphone Image on Unsplash

4. Scanner: A scanner is an input device that allows users to convert physical documents or images into digital format. Scanners use sensors or cameras to capture the information from the physical document or image and convert it into a digital image that can be stored and processed on a computer. Scanners are commonly used in document management, image editing, and archiving applications.

Example: A user scans a printed document using a scanner to create a digital copy that can be stored and edited on a computer.

Input Devices of Computer Definition

Source: white and gray hp all in one printer photo – Free Grey Image on Unsplash

5. Webcam: A webcam is an input device that consists of a camera and a microphone and is used to capture audio and video input from a user. Webcams are commonly used in video conferencing, online gaming, and live streaming. They allow users to communicate with others in real-time through audio and video, making them a virtual input device for online communication and multimedia applications.

Example: A user joins a video conference call and uses a webcam to capture audio and video input, allowing them to communicate with other participants.

Input Devices of Computer Definition

Source: black and silver speaker on white table photo – Free Camera Image on Unsplash

6. Microphone: A microphone is an input device that allows users to input audio into a computer system. Microphones can be either external or built-in, and they are commonly used in applications that require audio input, such as voice recording, video conferencing, and voice recognition. Microphones can be connected to a computer through various interfaces, such as USB, audio jack, or Bluetooth.

Example: A user records a voiceover for a video using a microphone connected to their computer, which captures their audio input and converts it into a digital format.

Input Devices of Computer Definition

Source: black and silver microphone with white background photo – Free Grey Image on Unsplash

7. Joystick/Gamepad: Joysticks and gamepads are input devices commonly used in gaming applications. Joysticks are usually used for flight simulators or gaming consoles, while gamepads are used for gaming consoles or PC gaming. They allow users to control the movement of characters or objects in a game, and they typically have buttons and triggers that can be used to perform various actions in the game.

Example: A user plays a racing game using a gamepad, which allows them to control the car's movement and perform actions such as accelerating, braking, and changing gears.

Input Devices of Computer Definition

Source: black video game controller photo – Free Hrvatska Image on Unsplash

8. Trackball: A trackball is an input device similar to a mouse but with a different form factor. It consists of a ball that can be rotated or rolled with the fingers, allowing users to move the cursor on the screen. Trackballs are commonly used in applications where space is limited, such as laptops or kiosks, or by users who find it more comfortable or ergonomic than a traditional mouse.

Example: A user navigates through a multimedia kiosk using a trackball to select options or browse through content.

Input Devices of Computer Definition

Source: GdJiLFL.jpg (1500×1027) (

9. Graphics Tablet: A graphics tablet, also known as a digitizing tablet or pen tablet, is an input device that allows users to input drawings or handwritten input into a computer system. Graphics tablets usually consist of a flat surface and a stylus or pen-like device that can be used to draw or write on the surface. The tablet can detect the stylus's position, pressure, and tilt, allowing for precise input in graphic design, digital art, or handwriting recognition applications.

Example: A user creates digital artwork using a graphics tablet and stylus, allowing them to draw on the tablet surface and translate their drawings into digital format on the computer screen.

Input Devices of Computer Definition

Source: white and black pen on white paper photo – Free Ipad Image on Unsplash

10. Biometric Devices: Biometric devices are input devices that use a user's unique physiological or behavioral characteristics for authentication or identification purposes. Biometric devices can include fingerprint scanners, iris scanners, facial recognition cameras, and voice recognition systems. These devices capture and analyze the user's biometric data, such as fingerprints, irises, facial features, or voice patterns, to authenticate or identify the user for access control, security, or authentication purposes.

Example: A user logs into their computer using a fingerprint scanner, which scans their fingerprint and matches it with the stored fingerprint data to authenticate their identity.

Input Devices of Computer Definition

Source: a person holding a phone photo – Free Turkey Image on Unsplash

Input devices are essential components of a computer system that allow users to input data or commands into the computer and interact with the system. From traditional keyboards and mice to modern touchscreens, webcams, and biometric devices, input devices play a crucial role in human-computer interaction and enable users to interact with computers in various applications such as communication, entertainment, education, and work.