Design of Multi-Function Keyboard Display Controller Based on FPGA

The multi-function keyboard display controller can complete lots of job, which contain direct keyboard, matrix keyboard, LED digital tube dynamic scanning. The controller including button identification, automatic continuous functions and LED digital tube display , flashing and controlling the decimal point. At the same time, the external interface of the controller using the routine UART interface, established a perfect communication protocol. So that we can realize the access keys and control the display of LED digital tube. The multi-function keyboard display controller not only can overcome the disadvantages that traditional microcontroller system take more of the I/O lines and system resource, but also can use the mainstream Field-Programmable Gate Array completes system functions.