This program copies BCD data to four 7-segment displays driven by a MC14499 serial display driver. A 4-digit count is copied at a rate of 10 Hz. The interface uses the 68681 DUART to drive the MC1-This program copies BCD data to four 7-segment displa

FPGA显示驱动7段数码管，实现数码管自动加数显示，通过按键控制-FPGA 7-segment display driver, to achieve automatic addend digital display, button control