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📄 同步二进制加法器.ewb

📁 通信原理-高频电子电路CAI-340页-22.2M-ppt版.zip
💻 EWB
字号:
Electronics Workbench Circuit File
Version: 5
Charset: ANSI
Description: 
"         计数电路是累计计数脉冲个数的时序电路,它一般都是由触发器构成。根据计数脉冲引入的方式不同,计数电路可以分为同步计数电路和异步计数电路。根据计数电路状态虚幻的模长不同又可分为2进制计数电路,10进制计数电路及任意进制计数电路。为了提高计数速度,可以用输入计数脉冲同时去触发计数器中的全部触发器,使应该发生状态翻转的触发器同时转换。按照这种方式组成的计数器叫做同步计数器。计数器是用3个下降沿触发的JK触发器构成,其中各级触发器的激励信号为:" 
"          J1=1	J2=Q1^n		J3=Q2^nQ1^n" 
"          K1=1	K2=Q1^n		K3=Q2^nQ1^n" 
"          三位二进制计数器的状态转移表:" 
"          序			原状态			次状态" 
"          号		Q3	Q2	Q1	Q3	Q2	Q1" 
"          0		 0	 0	 0	 0	 0	 1" 
"          1		 0	 0	 1	 0	 1	 0" 
"          2		 0	 1	 0	 0	 1	 1" 
"          3		 0	 1	 1	 1	 0	 0" 
"          4	 	 1	 0	 0	 1	 0	 1" 
"          5	 	 1	 0	 1	 1	 1	 0" 
"          6	 	 1	 1	 0	 1	 1	 1" 
"          7		 1	 1	 1	 0	 0	 0 " 

EncryptionType: 2
UsingVectorGraphics: 0
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