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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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单片机C51实战应用集锦，是很好的单片机初学者学习和参考的资料。...
单片机C51实战应用集锦，是很好的单片机初学者学习和参考的资料。-C51 single-chip Collection of combat application, is a very good learning and reference for beginners Singlechip information.
- 2022-03-14 22:28:27下载
- 积分：1
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very good procedure, I personally tested and absolutely reliable, I believe you...
非常好的程序，我亲自试用过，绝对可靠，相信对你会有很大的帮助-very good procedure, I personally tested and absolutely reliable, I believe you will be a big help
- 2023-06-26 09:35:03下载
- 积分：1
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Using AT89S52 realize phase function, optical encoder used to encode the output.
用AT89S52实现鉴相功能，用于对光电编码器的输出进行编码。-Using AT89S52 realize phase function, optical encoder used to encode the output.
- 2023-02-18 21:35:04下载
- 积分：1
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PIC16F877控制DS1302时间芯片 ds1302时间芯片
PIC16F877控制DS1302时间芯片 ds1302时间芯片-PIC16F877 chip control DS1302 time ds1302 time chip
- 2023-08-31 03:30:03下载
- 积分：1
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这是一个用pic开发的A/D转换程序。程序较简单，当很有用。
这是一个用pic开发的A/D转换程序。程序较简单，当很有用。-This is a pic with the development of the A/D converter. Procedure is relatively simple, when it is used.
- 2023-05-31 11:20:03下载
- 积分：1
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单片机51的剑杆织机程序.
源程序,调试通过.
单片机51的剑杆织机程序.
源程序,调试通过.-the Loom procedures. Source code, debugging through.
- 2023-07-13 16:05:03下载
- 积分：1
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EMC introduced Singlechip
EMC单片机介绍-EMC introduced Singlechip
- 2023-04-21 19:10:03下载
- 积分：1
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高质量的18b20，显示非常清晰，而且使用1602显示，方便，实惠，值得推荐...
高质量的18b20，显示非常清晰，而且使用1602显示，方便，实惠，值得推荐
- 2022-03-11 14:24:19下载
- 积分：1
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CF卡转换成IDE标准接口的电路图，个人的意见可供大家参考
CF卡转换成IDE标准接口的电路图，个人的意见可供大家参考-err
- 2022-11-10 17:30:03下载
- 积分：1
