How does a touch screen work?

Ok. So I just got this iPod touch for Christmas (yay!). So I was messing around with it and someone asked me, "I wonder how it works." And ever since I have been wondering as well!

So... If anyone can help, I would like a complete explanation on the workings? of a touch screen. So... Yeah thanks for any and all help!

4 Answers

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  • 1 decade ago
    Favorite Answer

    A basic touchscreen has three main components: a touch sensor, a controller, and a software driver.

    1. Touch Sensor

    A touch screen sensor is a clear glass panel with a touch responsive surface. The touch sensor/panel is placed over a display screen so that the responsive area of the panel covers the viewable area of the video screen. There are several different touch sensor technologies on the market today, each using a different method to detect touch input. The sensor generally has an electrical current or signal going through it and touching the screen causes a voltage or signal change. This voltage change is used to determine the location of the touch to the screen.

    2. Controller

    The controller is a small PC card that connects between the touch sensor and the PC. It takes information from the touch sensor and translates it into information that PC can understand. The controller is usually installed inside the monitor for integrated monitors or it is housed in a plastic case for external touch add-ons/overlays. The controller determines what type of interface/connection you will need on the PC. Integrated touch monitors will have an extra cable connection on the back for the touchscreen. Controllers are available that can connect to a Serial/COM port (PC) or to a USB port (PC or Macintosh). Specialized controllers are also available that work with DVD players and other devices.

    3. Software Driver

    The driver is a software update for the PC system that allows the touchscreen and computer to work together. It tells the computer's operating system how to interpret the touch event information that is sent from the controller. Most touch screen drivers today are a mouse-emulation type driver. This makes touching the screen the same as clicking your mouse at the same location on the screen. This allows the touchscreen to work with existing software and allows new applications to be developed without the need for touchscreen specific programming. Some equipment such as thin client terminals, DVD players, and specialized computer systems either do not use software drivers or they have their own built-in touch screen driver.

    Touchscreens Add-ons and Integrated Touchscreen Monitors

    We offer two main types of touchscreen products, touchscreen add-ons and integrated touchscreen monitors. Touchscreen add-ons are touchscreen panels that hang over an existing computer monitor. Integrated touchscreen monitors are computer displays that have the touchscreen built-in. Both product types work in the same way, basically as an input device like a mouse or trackpad.

    Touchscreens As Input Device

    All of the touchscreens that we offer basically work like a mouse. Once the software driver for the touchscreen is installed, the touchscreen emulates mouse functions. Touching the screen is basically the same as clicking your mouse at the same point at the screen. When you touch the touchscreen, the mouse cursor will move to that point and make a mouse click. You can tap the screen twice to perform a double-click, and you can also drag your finger across the touchscreen to perform drag-and-drops. The touchscreens will normally emulate left mouse clicks. Through software, you can also switch the touchscreen to perform right mouse clicks instead.

  • 1 decade ago

    First, you use you use your finger touch the thing you want to touch on the screen, then the device responds. Simple.

  • frings
    Lv 4
    3 years ago

    It calls for greater than application. There are electronics that manage a contact monitor that your computer does now not have and it's inconceivable to unfashionable have compatibility. If you desire a touchscreen computer, you'll be able to need to purchase one!

  • 1 decade ago

    you touch the screen!!!!!!!!!!

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