檢視同步计数器的原始碼

[[File:同步计数器.jpg|缩略图|[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%90%8C%E6%AD%A5%E8%AE%A1%E6%95%B0%E5%99%A8&step_word=&hs=0&pn=1&spn=0&di=3960&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3239765353%2C415589546&os=1423039967%2C558091161&simid=3556918482%2C470235725&adpicid=0&lpn=0&ln=930&fr=&fmq=1636799589748_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fwww.51wendang.com%2Fpic%2F1f7100608630501f408d0f67%2F1-767-png_6_0_0_135_119_662_515_892.979_1262.879-988-0-0-988.jpg%26refer%3Dhttp%3A%2F%2Fwww.51wendang.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1639391975%26t%3Db9dc1f50541064e667a9428f36ed8599&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bc8ojg1wg2_z%26e3Bv54AzdH3F15vAzdH3F8u08aamabmnaca8u9ab1aum0&gsm=1&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined&dyTabStr=MCwzLDgsMSwyLDQsNiw1LDcsOQ%3D%3D 原图链接][https://www.51wendang.com/doc/1f7100608630501f408d0f67 来自无忧文档]]]
'''同步计数器'''指的是被测量累计值，其特点是大大提高了计数器工作频率，相对应的是异步计数器。 对于同步计数器，由于时钟脉冲同时作用于各个触发器，克服了异步触发器所遇到的触发器逐级延迟问题，于是大大提高了计数器工作频率，各级触发器输出相差小，译码时能避免出现尖峰；但是如果同步计数器级数增加，就会使得计数脉冲的负载加重。<ref>[https://baijiahao.baidu.com/s?id=1640281008556117905&wfr=spider&for=pc 简单的CMOS数字集成电路介绍]呆望天空</ref>