WebApr 19, 2024 · 74HC138与74LS138这两个芯片都是74系列的逻辑芯片,并且后缀型号相同,它们的功能是一样的,区别之处在于这两个芯片的工作电压范围、逻辑电平等。. 74HC138与74LS138都是3-8线译码器,它们的作用是将输入的二进制数据通过芯片的译码之后,按照十进制使对应的 ... WebMay 6, 2024 · Shift Register / Encoder. Forum 2005-2010 (read only) General Frequently-Asked Questions. mcsilvio July 6, 2010, 4:24am #1. Hi there, I bought an 8x8 LED matrix. The tutorial says to wire up each used pin of the led matrix to an individual out on the arduino. To me this seems a little basic (which I'm sure is the point of the tutorial), but I ...
3-8译码器--74HC138芯片(总结)_Mr庞.的博客-CSDN博客
WebThe 74HC138; 74HCT138 decodes three binary weighted address inputs (A0, A1 and A2) to eight mutually exclusive outputs (Y 0 to Y 7).The device features three enable inputs (E 1, E 2 and E3).Every output will be HIGH unless E 1 and E 2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion to a 1-of-32 (5 to 32 lines) … WebHello, we have implemented in Proteus ping-pong game. Arduino´s port 2,3 and 4 allow the 74HC138 chip keep counting from 1 to 8 indefinitely, functioning as ... sennhofweg winterthur
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WebThe 74HC138; 74HCT138 features three enable inputs: two active LOW (E 1 and E2) and one active HIGH (E3). Every output is HIGH unless E1 and E2 are LOW and E3 is HIGH. … WebAug 13, 2024 · 74hc138与74hc238逻辑功能一致,只不过74hc138为反相输出。 CD74HC138,CD74HC238和CD74HCT138,CD74HCT238是高速硅栅CMOS解码 … WebOct 27, 2024 · 单片机74HC138译码器应用原理图及真值表. 设计单片机电路的时候,单片机的 IO 口数量是有限的,有时并满足不了我们的设计需求,比如我们的 STC89C52 一共 … sennhti headphones