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Touch screen is a computer display screen that is sensitive to human touch. It allows a user to interact with a computer by touching the icons or graphical buttons on the monitor screen. It is a system that is designed to help users who have difficulty in using mouse or keyboard and is used with information kiosks, computer-based training devices etc. A touch screen panel is attached externally to the monitor that is connected to a serial or Universal Serial Bus (USB) port on a computer. Nowadays, monitors are also available with built-in touch screen technology. There are three types of touch screen technologies:
- Resistive
- Capacitive
- Surface Wave
