至简设计法--篮球倒计时

说明：  篮球倒计时 工程说明 本项目包含2个按键和4位数码管显示，要求共同实现一个篮球24秒的倒计时，并具有暂停和重新计数复位的功能。 案例补充说明 与单片机等实现模式相比，FPGA倒计时系统大大简化，整体性能和可靠性得到提高。在篮球24秒倒计时的模块架构设计方面，只需要一级架构下的BCD译码模块、倒计时模块和数码管显示模块，即可实现24秒倒计时功能。
(Basketball countdown Engineering description This project contains 2 buttons and 4 digital display, which requires a basketball countdown of 24 seconds, and has the function of pause and count reset. Case Supplement Compared with the implementation mode of MCU, the FPGA countdown system is greatly simplified, and the overall performance and reliability are improved. In basketball 24 seconds countdown module architecture design, only need a framework under the BCD decoding module, countdown module and digital display module, can achieve 24 seconds countdown function.)