The design of industrial instruments LED display based on PIC MCU;

The safety information management system used in coal mine has many functions, such as security information inputting, inquiring, printing and LED displaying, is designed under network environment with VB, SQL Server, Formula One, etc, in terms of the security management practice in coal mine.

The LED display principle and the data communication method between the AVR SCM and PC machine were discussed,and the steps of program design was given.

The dynamic display interface circuit of the LED display used in the Ultrasonic Distance Tester which is controlled with a series of SCM such as MCS-51 or MCS-96,is introduced.

Based on the problems of solid circuit design found during the rebuilding of excitation system on air compressor and problems resulted by LED display inversion because of limited installation room,the paper summarizes a display coding list under specific conditions and gets a alphabet coding list regularly used when a shared anode LED display in normal or in inversion position.

Implementation of document images compression in LED screen;

An approach to implement the full color image display on the large size LED screen is introduced.

This paper proposes a method to reduce the chromatism for full-color LED screen to improve the display quality.

A new way introduced in the article about how to capture display data for LED display screen.