Course Content
Define Information Technology
Definition and scope of Information Technology.
Understanding the Input Processing Output Storage Cycle
How does your computer turn input into output? We explore the intricacies of Input Processing Output Storage (IPOS).
Evaluating the Relative Merits of Cloud Storage and Local Storage
Analysing the Merits of Various User Interfaces
We discuss the relative merits of the various types of user interfaces.
Tailoring Computer Systems for Specific Purposes
Evaluate the suitability of a given computer system for a specific purpose
Troubleshooting Basic Computer Hardware Problems
Learn the basics of troubleshooting common computer hardware issues.
Distinguishing Between Data and Information
Information from Online Sources
We evaluate the reliability of information obtained from online sources.
Data Validation vs. Data Verification
Computer Fundamentals
    About Lesson

    In today’s digital age, the selection of the right input devices plays a crucial role in ensuring efficient and seamless interactions between users and their devices. Whether it’s navigating through applications, entering data, or engaging in creative tasks, choosing the appropriate input devices can significantly enhance productivity and user experience.


    To begin our exploration, let’s take a moment to understand the various types of input devices available in the market. From traditional peripherals to advanced technologies, input devices come in a wide range of forms and functionalities.


    Optical Mark Reader (OMR)

    An OMR is designed to detect and interpret marks made on special paper. It is commonly used for automated test grading and surveys where users fill in bubbles or shaded areas to indicate their responses.


    Character Readers (OCR, MICR)

    OCR (Optical Character Recognition) and MICR (Magnetic Ink Character Recognition) devices are capable of scanning and interpreting printed or handwritten text. OCR devices convert scanned documents into editable text, while MICR devices extract and interpret characters printed with magnetic ink, commonly used in banking and financial applications.



    A mouse is a common pointing device that allows users to control the movement of a cursor on a screen. It typically features buttons for clicking and scrolling, facilitating precise control and navigation within graphical interfaces.



    Popular in gaming and aviation applications, a joystick is a lever-like input device that allows users to control movement or direction in two or more axes. It provides a more intuitive and immersive experience for tasks requiring precise control.


    Bar Code Reader

    Bar code readers, also known as scanners, use laser or image-based technology to capture and interpret bar codes found on products or documents. They are widely used in inventory management, retail, and logistics for quick and accurate data capture.


    Document Scanner

    A document scanner is used to convert physical documents into digital format. It enables users to store, share, and manipulate documents electronically, streamlining information management and reducing paper clutter.



    A light-pen is a handheld device that can detect light emitted by a display screen. By touching the pen to the screen, users can interact with specific elements or make selections. Although less common today, light-pens were widely used in early computer systems.


    Touch Terminals

    Touch terminals combine a screen with touch-sensitive capabilities, allowing users to interact directly with the display. They are commonly used in industries such as retail and hospitality for point-of-sale systems, self-service kiosks, and interactive information displays.


    Voice Response Unit

    A voice response unit, also known as a voice recognition system, enables users to interact with a device or application using spoken commands. This technology has applications in hands-free environments and accessibility for individuals with limited mobility.


    Touch Screens (Tablets, Point of Sale, ATM)

    Touch screens, found in devices such as tablets, point-of-sale systems, and ATMs, enable users to interact with the display by touching specific areas or virtual buttons. They have become increasingly prevalent due to their intuitive and user-friendly nature.



    The keyboard is a staple input device for text entry and commands. It features an array of keys representing letters, numbers, symbols, and functions. Keyboards vary in layout and design, catering to different needs and preferences.


    Digital Camera

    Digital cameras capture images and videos, providing a means to input visual content into digital devices. They are used extensively in photography, content creation, and video conferencing applications.


    Biometric Systems

    Biometric systems utilize unique physical or behavioral characteristics for user identification and authentication. Common examples include fingerprint scanners, facial recognition, and iris scanners.



    Sensors are input devices that detect and measure physical phenomena such as light, temperature, pressure, or motion. They enable devices to gather environmental data for various applications, including home automation, healthcare monitoring, and industrial control.


    Remote Control

    A remote control is a handheld device used to wirelessly operate electronic devices from a distance. It commonly finds application in entertainment systems, home automation, and smart devices.


    Sound Capture

    Sound capture devices, such as microphones, enable users to input audio signals into devices for recording, communication, or voice commands. They are integral to applications involving audio recording, conferencing, and voice recognition.


    Pointing Devices

    Pointing devices, like trackballs or touchpads, allow users to move a cursor or pointer on a screen. They provide an alternative to traditional mice and are often found in laptops and other portable devices.



    Webcams are cameras designed to capture live video or images, typically used for video conferencing, live streaming, or online content creation.



    Selecting the right input devices is crucial for optimal user experience and productivity. By understanding the different types of input devices available, user requirements and preferences, users can make informed decisions to match their needs and enhance their overall computing experience. Whether you’re a gamer, creative professional, or everyday computer user, finding the perfect input devices will undoubtedly contribute to a seamless and enjoyable interaction with your digital world.