三位二进制编码器.ewb

Multisim2001软件的仿真电路实例261例

Electronics Workbench Circuit File
Version: 5
Charset: ANSI
Description: 
"        我们知道，数字信号不仅可以用来表示数，也可以用来表示各种指令和信息。所谓编码，就是在选定的一系列数码中，赋予每个二进制数码以某一固定含义。能完成编码功能的电路通称为编码器。根据输出代码种类的不同，可分为二进制编码、二—十进制编码和优先编码等。" 
"        用n位二进制代码对N=2^n个一般信号进行编码的电路称为二进制编码器。该图就是一个二进制编码器，它的功能是将Y0，Y1，……，Y7八个特定信号编成二进制代码。信号Y0~Y7人为规定：仅当某数据线上出现高电位时，即表示某个数码。如Y5线上出现高电位，而其它线上都为低电位，则表示输入数码5，并将对应的输出编成二进制代码（101），其余类推。由此可得到三位二进制码对八个特定数码的编码表。" 
"Y0	Y1	Y2	Y3	Y4	Y5	Y6	Y7	C	B	A" 
" 1	 0	 0	 0	 0	 0	 0	 0	0	0	0" 
" 0	 1	 0	 0	 0	 0	 0	 0	0	0	1" 
" 0	 0	 1	 0	 0	 0	 0	 0	0	1	0" 
" 0	 0	 0	 1	 0	 0	 0	 0	0	1	1" 
" 0	 0	 0	 0	 1	 0	 0	 0	1	0	0" 
" 0	 0	 0	 0	 0	 1	 0	 0	1	0	1" 
" 0	 0	 0	 0	 0	 0	 1	 0	1	1	0" 
" 0	 0	 0	 0	 0	 0	 0	 1	1	1	1" 

EncryptionType: 2
UsingVectorGraphics: 0
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