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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
- 积分：1
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STM32 开发板例子:外部中断.
开发环境:Keil For ARM
STM32 开发板例子:外部中断.
开发环境:Keil For ARM-STM32 development board example: external interrupt. Development Environment: Keil For ARM
- 2023-05-11 20:20:02下载
- 积分：1
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16键盘程序，按任何一个键都可以返回相应的键值，可以下载，绝对好用！...
16键盘程序，按任何一个键都可以返回相应的键值，可以下载，绝对好用！-16 keyboard procedures, any key that one can return to the corresponding keys, can be downloaded for absolutely everything!
- 2023-04-03 10:15:04下载
- 积分：1
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c8051F020 液晶显示的程序 也许有用
c8051F020 液晶显示的程序 也许有用-c8051F020 LCD procedures would be useful
- 2023-05-16 22:20:03下载
- 积分：1
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51单片机C语言编程手册，由周立功发布，详细介绍了51的硬件与C编程...
51单片机C语言编程手册，由周立功发布，详细介绍了51的硬件与C编程-51 Single-chip C language programming manual, by the week Ligong released details of 51 hardware and C programming
- 2022-02-26 18:30:21下载
- 积分：1
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这功能实在太强大了，你下载来看看就知道了，太精彩了啊。...
这功能实在太强大了，你下载来看看就知道了，太精彩了啊。-This function is simply too strong, you take a look at the download will know, too wonderful ah.
- 2023-09-04 14:20:03下载
- 积分：1
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80C51 single
80C51单片机中结合555电路实验和单片机定时器频率计实验，里面包含555定时器的datasheet和实验源程序-80C51 single-chip integration of 555 timer circuit experiments and the frequency of single-chip experiment, which contains 555 timer datasheet and experimental source
- 2022-05-30 10:05:29下载
- 积分：1
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是单片机与PC机RS232串口通信的调试好帮手,当你苦于串口通信的调试,试试如何...
是单片机与PC机RS232串口通信的调试好帮手,当你苦于串口通信的调试,试试如何-is SCM and PC RS232 serial communication debugging good helper, when you suffer from serial communications debugging, how to try
- 2023-03-17 05:05:03下载
- 积分：1
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基于单片机的数字频率计设计，定时器T0完成定时功能，T1采用计数功能...
基于单片机的数字频率计设计，定时器T0完成定时功能，T1采用计数功能-MCU-based design of digital frequency meter, timer T0 timing finish, T1 using count function
- 2022-03-18 00:17:49下载
- 积分：1
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arm2410 various experimental basis, has been tested to be content: LCD controlle...
arm2410各种基础实验,已通过测试,内容:
LCD控制器.doc
看门狗定时器.doc
定时器.doc
中断控制器.doc
DMA 控制器.doc
ad.doc
7279键盘和数码管.doc
IIC 总线接口.doc
IIC 总线接口.doc
RTC.doc
UART.doc-arm2410 various experimental basis, has been tested to be content: LCD controller. doc watchdog timer. doc timer. doc interrupt controller. docDMA controller. docad.doc7279 keyboard and digital tube. docIIC bus interface. docIIC bus interface. docRTC.docUART.doc
- 2022-03-30 00:19:21下载
- 积分：1
