For operational convenience, people use a touch screen instead of a mouse or keyboard. The touch screen is composed of a touch detecting component and a touch screen controller, and the touch detecting component is installed in front of the display screen for detecting the touch position of the user, and then transmitting related information to the touch screen controller; and the main function of the touch screen controller is from the touch point detecting device. The touch information is received and converted into contact coordinates, which are then transmitted to the CPU. It can also receive commands from the CPU and execute them.
The touch screen consists of a detection unit and a touch screen controller mounted in front of the display screen. When a finger or other object touches the touch screen mounted on the front end of the display, the touched position is detected by the touch screen controller and sent to the host through an interface (such as RS-232 serial port, USB, etc.). At present, the touch screen has been developed from a single touch screen to realize a multi-touch screen.
In 1971, American SamHurst invented the world's first touch sensor. Although this instrument is not the same as the touch screen we see today, it is regarded as the beginning of the development of touch screen technology. At that time, SamHurst was a teacher at the University of Kennedy. Because he had to deal with a lot of graphic data every day, he began to wonder how to improve his work efficiency and use the easiest way to get these graphics. He transformed his three basements into workshops, one for processing wood, one for making electronic components, one for assembling these parts, and eventually making the earliest touch screen. The earliest touch screen was named "AccuTouch" and due to the manual assembly, several devices were produced a day. In 1973, the technology was selected by the American Industrial Research magazine as one of the 100 most important new technology products of the year. Soon, SamHurst set up its own company and worked with Siemens to continuously improve the technology. Until 1982, Sam Hurst's company exhibited 33 sets of TVs with touch screens at a technology show in the United States. The civilians first touched the magic touch screen for the first time.
Since then, touch screen technology has been widely used in public service areas and personal entertainment devices. People are gradually accustomed to using the "touch" method to purchase goods on electronic vending machines, order songs on karaoke machines, and query the information they need at banks, hospitals, libraries, and airports.
In the early days, touch screens were often installed in industrial or commercial equipment such as industrial computer and POS terminal. The launch of the iPhone in 2007 has become a milestone in the development of the touch industry. Apple has designed a mobile phone that requires at least 20 buttons to be designed with just three or four buttons, and the rest of the operation is done by the touch screen. In addition to giving users a more direct and convenient operating experience, it also makes the shape of the mobile phone more fashionable and lighter, which increases the intimacy of direct interaction between human and machine, triggers the enthusiastic pursuit of consumers, and also opens the touch screen to the mainstream. The journey of manipulating the interface.
Technology is constantly improving. Although there are already many brands of touch-screen mobile phones on the market, an important reason why the iPhone can still cause a sensation is that Apple has taken the lead in applying "multi-touch" to mobile phones. In the past, mobile phone touch screens were mostly resistive, and only one position of the touch could be perceived at a time. The capacitive touch screen with dedicated software can handle touch commands from multiple fingers at the same time. It is reported that Microsoft's concept computer Milan released recently also applied this technology.
Touch screen technology is also constantly being developed for new uses, not even limited to the graphical interface. A research institute of the Japan Telecom Telephone (NTT) company has developed a touch control device that can control the movement of the robot arm according to the position and force of the finger touch. The device fits the touch sensor into an aluminum cylinder, just like a joystick. With just one finger touching any part of the joystick, the sensor can distinguish the distance and pressure strength of the finger movement. Transformed into the movement of the robot. It should be known that in the past robot movement, the operator needs to press a plurality of buttons, and the data of the movement track is carefully input, and the movement cannot be performed obliquely. The Institute's future research goal is to further improve the joystick into a spherical shape to achieve all-round multi-angle free movement.
The touch screen has given the public a refreshing feeling in the application of the market, and is deeply loved by the general public. Therefore, the future world is a touch world, a remote control world, and the development of large-size touch screens has a wide space. Moreover, the touch screen will go a step further, using the eye or brain to make an indication, bringing more convenience to people's lives.
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