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touch screen display types

touch screen display types.Touch screens consist of two transparent layers stacked on top of each other. Four- and eight-wire touch screens consist of two layers of transparent resistive materials with the same surface resistance. Five- and seven-wire touch screens consist of a resistive layer and a conductive layer. Use an elastic material to separate the two layers. When the pressure on the surface of the touch screen ( such as pressing with a pen tip or a finger ) is large enough, contact occurs between the top layer and the bottom layer. All resistive touch screens use the voltage divider principle to generate voltages that represent X and Y coordinates. As shown in Figure 3 , the voltage divider is implemented by connecting two resistors in series. The upper resistor (R1) is connected to the positive reference voltage (VREF) , and the lower resistor (R2) is connected to ground. The voltage measurement at the connection point of the two resistors is directly proportional to the resistance of the resistor below.

IQTouch K Interactive Display

touch screen display types.Touch screens consist of two transparent layers stacked on top of each other. Four- and eight-wire touch screens consist of two layers of transparent resistive materials with the same surface resistance. Five- and seven-wire touch screens consist of a resistive layer and a conductive layer. Use an elastic material to separate the two layers. When the pressure on the surface of the touch screen ( such as pressing with a pen tip or a finger ) is large enough, contact occurs between the top layer and the bottom layer. All resistive touch screens use the voltage divider principle to generate voltages that represent X and Y coordinates. As shown in Figure 3 , the voltage divider is implemented by connecting two resistors in series. The upper resistor (R1) is connected to the positive reference voltage (VREF) , and the lower resistor (R2) is connected to ground. The voltage measurement at the connection point of the two resistors is directly proportional to the resistance of the resistor below. IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.

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Let’s See IQTouch K Interactive Display

4K UHD Display

Stunning 4K UHD can display a cystal clear image on
screen.

20 Touch Points

Enable an interactive and collaborative teaching atmosphere
in classroom.

Built in Wifi hotspot & Optional
Multi-screen casting Software

Support to cast your devices to the screen wirelessly,
and your devices can control the screen wirelessly.

Easy-to-Use Built-in Whiteboard
Software

Built-in Whiteboard software under Android system allow to do
two separate screen teaching and three separate screen teaching.

All-channel Annotation

Enable to annotate under Android system and
Windows system.

Power On/Off Lock and Screen Lock can
be Set with A Password Respectively

Support to lock screen and lock power on/off button
to avoid student malfunction and secure privacy.

To compare with our other IQTouch Series

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