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由8051组成的单片机系统通常情况下,P0口分时复用作为地址、数据总线,P2口提供A15...
由8051组成的单片机系统通常情况下,P0口分时复用作为地址、数据总线,P2口提供A15-A8即高8位地址,P3口用作第二功能,只有P1口通常用作I/0口。P1口是8位准双向口,它的每一位都可独立地定义为输入或输出,因此既可作为8位的并行I/O口,也可作为8位的输入输出端。当工作在输入方式时,对应位的锁存器必须先置1,才能正确地读到引脚上的信号,否则,执行读引脚指令时,若对应位的锁存器的值为0,读的结果永远为0。-By 8051, composed of single-chip microcomputer system under normal circumstances, P0 timeshare I reuse as address, data bus, P2 I provide A15-A8 high eight address, P3 mouth for the second function, I usually only P1 for I/0 I. P1 I was eight quasi-two-way port, it can be independent of each and every defined as input or output, it can be used as 8-bit parallel I/O port, can also be used as 8-bit input and output side. When the work in the input, the corresponding bit latch must first buy one in order to correctly read the signal pin, or pin the implementation of reading instruction, if the corresponding bit latch the value of 0, Reading the results of Forever to 0.
- 2023-08-10 04:55:03下载
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2 CY7C68013 between GPIF and Slave FIFO asynchronous communications programs, as...
2个Cy7c68013之间的GPIF与Slave FIFO异步通讯方案,以及源码-2 CY7C68013 between GPIF and Slave FIFO asynchronous communications programs, as well as source
- 2022-01-23 10:57:39下载
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- 2022-04-22 13:32:41下载
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脉冲发生测试.此程序为AD9850(DDS)直接数字频率合成器C语言源码。用125M的有源晶振,频率无失真输出可达到40M。...
脉冲发生测试.此程序为AD9850(DDS)直接数字频率合成器C语言源码。用125M的有源晶振,频率无失真输出可达到40M。-Impulse test. This procedure for the AD9850 (DDS) Direct Digital Frequency Synthesizer C language source code. With 125M active crystal, the frequency output can be achieved without distortion 40M.
- 2023-07-30 17:20:03下载
- 积分:1
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ucos
uCOS-II 2.52在51上的移植程序(大模式).rar-uCOS-II 2.52 of the 51 on the transplantation procedure (large model). rar
- 2022-08-03 17:23:22下载
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通过AD0809模拟输入数字,
通过AD0809将输入的模拟量转化为数字量,
通过调节电位器来改变模拟电压输入,通过数码管显示电压的变化-Through the AD0809 analog input into digital,
By adjusting the potentiometer to change the analog voltage input, digital display voltage changes
- 2023-08-05 12:25:04下载
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30 Road remote control switches, keys, respectively, by 0
30路遥控开关,按0-30个键分别点亮p0.0-p3.5的灯,32键全灭
可以用此外接驱动后控制30路开关! 遥控器端口p3.7-30 Road remote control switches, keys, respectively, by 0-30 months p0.0-p3.5 lit the lamp, 32-key body can also take control of 30 after the driver switch! Remote control port p3.7
- 2022-07-21 00:00:06下载
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一个简单国外蜘蛛爬虫程序。共享给大家使用,多提宝贵意见。
一个简单国外蜘蛛爬虫程序。共享给大家使用,多提宝贵意见。-A simple procedure of foreign spiders reptiles. Shared use of U.S., with more valuable advice.
- 2022-01-26 05:32:05下载
- 积分:1
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this program is to tell how to use 51tiny embedded system to program
本程序的功能是在51单片机上实现51tiny嵌入式操作系统编程-this program is to tell how to use 51tiny embedded system to program
- 2022-04-27 01:52:43下载
- 积分:1
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飞思卡尔单片机MC9S08AW60移植到MC9S08AC60方法(英文)
飞思卡尔单片机MC9S08AW60移植到MC9S08AC60方法(英文)-Freescale
- 2022-12-16 20:35:04下载
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