发布网友 发布时间:2022-05-05 16:29
共2个回答
热心网友 时间:2022-06-27 18:39
The system is based on the company's Embedded SAMSUNG chip S3C44B0X foundations. S3C44B0X is the widespread use of ARM7TDMI core-based SOC. The chip unit on the powerful, including LCD controller (maximum support 256-color DSTN). and the LCD with a dedicated DMA channels. S3C44B0X contains 8 address space, each of the 32MB address space. A total of 256MB of address space. Touchscreen detection by touching parts and touch screen controller; Touch detection components installed in front of the screen display, Users touch for detecting position and accept evacuations Touchscreen controller; Touchscreen controller and the main effect is from the touch detection device touch receive information, it will be converted into contact coordinates send another CPU, it also will receive CPU issued orders to be implemented. The system used by the Touchscreen is resistance Touchscreen, Touchscreen resistance of the main part of the display surface with a very thin film resistor with the screen, This is a multi-layered composite film, a layer of glass or plexiglass as a grassroots, surface coated with a layer called ITo the transparent conctive layer, then cover with top layer of surface hardening, smooth proof plastic layer, Its inner surface is coated with a layer of conctive layers (ITO nickel or gold), In two conctive layer between many of the small (less than one-inch in) transparent separation point separates them insulation. When the finger touch screen, two conctive layer in touch position will have a contact, Controllers detected the access and calculate X and Y axis position, gave the signal processing CPU热心网友 时间:2022-06-27 18:40
This system is based on SAMSUNG in Corporation's embedded chip S3C44B0X foundation.S3C44B0X is the domestic application widespread based on ARM7TDMI essence SOC.On this core function is piece by piece formidable, (supports 256 colors most greatly including the LCD controller DSTN), and has 1 LCD the special-purpose DMA channel.S3C44B0X contains 8 address spaces, each address space is 32MB, altogether has the 256MB address space. The touching screen is composed by the touching examination part and the touching screen controller; The touching examination part installs in front of the monitor screen, uses in examining the user to touch the position, accepts the evacuation touching screen controller; But touches the screen controller the main function is receives the touching information from the touching detector set, and transforms it the electronic contact coordinates, again gives CPU, at the same time it can receive the order which CPU sends in and carries out.This system uses the touching screen is the resistance type touching screen, the resistance touching screen main part is the resistance thin film screen which together and the scope face coordinates extremely, this is one kind of multi-layered compound thin film, takes the basic unit by glass or the plexiglass, the surface spreads has one to call ITo the transparent concting layer, above Ge You a outside surface carburizing, smoothly to guard against the plastic level again which blows, its internal surface also spreads has a concting layer (ITO or the nickel gold), has many tiny (is smaller than in 1 inches) the transparent isolation between two concting layers them to separate the insulation.When finger touching screen, two concting layers had a contact in a touching position, the controller have detected this connection and calculate X, the Y axis position, gave the signal CPU to carry on processing