nachos实验 操作系统实验 管程同步机制 消费者和生产者为例 改编原先版本中的一点小错误-nachos experimental test tube process operating system, consumers and producers as an example synchronization mechanism adapted the original version of a small error

设计一个同步二十四进制计数器，理解触发器同步计数工作机制，掌握同步触 发控制的VHDL描述方法以及异步清零的描述方法。 -Design a synchronous binary counter twenty-four understanding count the trigger synchronization mechanism, master synchronous trigger VHDL descr iption method and asynchronous clear desc