ROLE OF INPUT AND OUTPUT DEVICES

 INPUT DEVICES AND ITS FUNCTIONS

Input devices are used to enter Data into a computer. They are controlled by the user. Information is given to the system through these tools.data, are the facts, and numbers are characters that are entered into computer via keyboard.Other devices like mice, cammeras,mouse and scanners are commonly used. Each input device is designed for a specific task. Signals are sent to the processor from these devices. Instructions are received by the computer through them. Without input devices, computers cannot be operated. Input devices are computer factors with the help of which we enter programs, data etc. into the computer. The tools are found in almost every digital system. Their role in technology is considered very important. By input devices, the gap between humans and machines is easily bridged.

 

    COMPUTER INPUT DEVICES 

• keyboard 
• mouse/trackball
• joystick 
• lightpen 
• Touch screen 
• Touch pad 
• Bar code reader
• Graphic tablet 
• Digital cameras
• Electronic card reader
• Digitizer

Keyboard

Used extensively in computing environments, the keyboard is operated by pressing keys corresponding to characters and commands. Data is entered through keystrokes, and instructions are sent to the computer instantly. Input is facilitated efficiently, and multitasking is often enhanced. Various layouts are employed worldwide, and different designs are adopted for comfort and speed.101 QWERTY keyboard is the most popular.

Mouse

                                                                   MOUSE

Navigational input is provided through the mouse. Movement is detected by sensors, and the pointer is guided on the screen. Commands are executed by clicks, and dragging actions are enabled. Precision tasks are performed easily, and accessibility is greatly improved. Both wired and wireless models are utilized in various settings.

Joystics

Joysticks are applied mainly in gaming and simulation systems. Directional input is achieved by tilting the stick. Control over objects or views is maintained through various buttons. A responsive experience is delivered, and immersive interactions are encouraged. Industrial and robotic systems are also operated using them.

        

Touchscreen

                                                Touchscreen

Touch gestures are interpreted directly on the display. Commands are triggered by taps, swipes, and pinches. No physical buttons are required, and minimal effort is needed for interaction. Multitouch capabilities are integrated, and visual feedback is provided instantly. Devices across mobile, kiosk, and automotive systems are equipped with this technology.

Lightpen

A light-sensitive tool is utilized to interact with the screen. Movement is tracked by a sensor, and selections are registered through contact with the display. Direct manipulation is allowed, and pixel-level precision is offered. Though less common today, it is still used in certain technical and creative applications.

Digital-cameras

Images are captured electronically through digital sensors. Light is converted into electrical signals, and pictures are stored on memory cards. High-resolution photos are produced without film. Easy transfer and editing are enabled by digital formats. Widespread use in photography, surveillance, and documentation is seen globally.

 OUTPUT DEVICES

Output Devices: Displaying the Digital World

After the data has been processed, the results are output in the form of useful information In modern computing, output devices are widely used to present information that has been processed. Visual data is displayed through monitors and screens, while audio signals are emitted by speakers and headphones. Hard copies of digital content are produced by printers, and physical feedback is delivered through haptic devices.

On screens, images and text are rendered with clarity, and color accuracy is maintained through advanced technologies. Sounds are transmitted clearly, and immersive experiences are created in multimedia environments. Printed documents are generated quickly, and high precision is achieved in both text and graphics.

Through various output methods, digital information is brought to life. Experiences are enriched, and interaction with technology is made seamless. In every sector, from education to entertainment, output devices are depended upon for delivering results effectively.

COMPUTER OUTPUT DEVICES

• moniter
• printer
• speaker
• modem

Monitor

The screen that display the information such as text, numbers, pictures-softcopy. Visual output is presented through the monitor. Digital signals are converted into images, and content is displayed in real time. Various resolutions are supported, and both color accuracy and brightness are carefully adjusted. Touch capabilities are also included in some models, and immersive experiences are provided in both work and entertainment.

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Speaker

Audio signals are transformed into sound by the speaker. Allows you to hear music, voice, and effects are delivered with clarity from your computer. Frequencies are amplified, and stereo output is produced. Soundscapes are enhanced, and environments are enriched in gaming, media, and communication. Both wired and wireless designs are widely adopted.

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Printer

Digital documents are turned into physical copies by the printer. In simple words the printers gives you the information from the computer in printed form hardcopy.Text and graphics are printed on paper with precision. Ink or toner is applied through advanced mechanisms, and various media sizes are supported. High-speed printing is enabled, and results are shared instantly in offices, homes, and industries.

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Modem

Data is transmitted and received through the modem. Signals are modulated and demodulated to enable internet access. Connections are established between networks, and communication is maintained continuously. Wired or wireless setups are supported, and fast, reliable data transfer is ensured across various devices. It allows to use the computer to communicate with other computer.