文档预览： Manifestation controlling mould piece is mainly consisted of the digital code tube and the driving chip (74HC245), it shows the voltage measured by the ... 点击下载

文档预览： use ieee.std_logic_1164.all;entity mux21 isport(a,b: in std_logic; ...74hc245,\74HC574\, CLR/REST, \IN, 4/SCLK\, D100% 8-11数据类型BIT... 点击下载

文档预览： 其中,S1-S8分别为日/秒,月/分,年/时,选择,消音,改写,定格,打印共八个触摸...DS12887口地址.74HC245...74HC373D QGPS1(0000H)PS2(0800H)PS3(1000H)... 点击下载

文档预览： 驱动芯片主要是74HC595 74HC245/244 74HC138 4953.户内条屏 常用的单元板规格有:参数:D=3.75;点距4.75mm 64点宽x16点高,1/16扫户内亮度.单红/红绿双色... 点击下载

文档预览： 0 DB-900001-BH,4 74HC04/74HC138/74HC245/74HC595/MP1410/MP1482/MP1484LM4871MP1410SG3525ULN2003DS1302AMS1117FM62429AT24C系5 列5 ... 点击下载

文档预览： 74HC138的作用:八位二进制译十进制译码器. ' w W% P* a+ U p u& Q# ...3, 检测74HC245有无虚焊短路,245上对应的使能(EN)信号输入输出脚是否虚焊或... 点击下载

文档预览： ... ???? ?? ?? ??? ???? SVM PWM ???????????? ? ???? ?? ?????????????? ???? ???? 3.3V ???? ? 5V (CD4050B ... 点击下载