###计数的艺术
[[https://www.fpga4fun.com/Counters.html|The art of counting]]\\
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计数器构成基本的FPGA构建块。它们具有各种形状和形式...\\

  - [[https://www.fpga4fun.com/Counters1.html|二进制计数器]]
  - [[https://www.fpga4fun.com/Counters2.html|特别柜台]]
  - [[https://www.fpga4fun.com/Counters3.html|LFSR柜台]]
  - [[https://www.fpga4fun.com/Counters4.html|进位链]]
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####链接
  * Wikipedia的电子[[https://en.wikipedia.org/wiki/Counter_(digital)|计数器]]，[[http://en.wikipedia.org/wiki/Gray_code|Gray]]和[[http://en.wikipedia.org/wiki/LFSR|LFSR]]。