A touchscreen is a touchscreen used on mobile phones, tablets and touch monitors. All operations using the display are carried out by touching the surface with a stylus or a finger. This type of screens is by far the most popular and used in modern technology.
History
The first touchscreen was invented in the United States, and a device using realized touch technology was released in 1972 on a computer called the PLATO 4, which was equipped with a touch-sensitive screen. The display had a low accuracy in recognizing where the user was clicking, but allowed researchers to choose the right answer when working with the computer and performing the desired tasks.
Gradually, the technology has become more and more adapted and improved. By 1983, the developers managed to release a computer based on the IR grid. At that time, touch screens began to spread in medicine and industry. The first mobile phones with touchscreens appeared somewhat later - after the appearance of liquid crystal displays.
Advantages and disadvantages
Today, touchscreens are used not only in mobile gadgets, but also in special terminals for making payments, installations for automating the trading process (for example, R-keeper), game consoles (for example, PSP), etc.
Among the advantages of such screens are the simplicity of the interface used, saving of usable space and size of the device, quick selection of the desired functions and more convenient typing, as well as advanced multimedia functions (for example, enlarging an image with your fingers or controlling video rewinding with a touch). Among the disadvantages of touchscreens are their fragility, high requirements for battery resources and the need for constant cleaning of the display, applying protective coatings or films.
The new displays support multi-touch technology, which allows you to operate phone functions with multiple fingers. This makes it possible to implement screen control with gestures to zoom in on the viewed image or turn the pages of the displayed document.
Display types
The principle of operation differs in four-wire, five-wire, matrix, capacitive, infrared, DST and induction screens. Depending on the technology being implemented, the screens can display an image and more accurately respond to touch, both with the use of auxiliary objects (for example, stylus) and with a touch of the hand. Also, screens have a lifespan, which can also vary depending on the technology used.