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在做项目（工程）的时候，我们经常要用到比较多的按键，而且IO 资源紧张，
于是我们就想方设法地在别的模块中节省IO 口，好不容易挤出一两个IO 口，却...
在做项目（工程）的时候，我们经常要用到比较多的按键，而且IO 资源紧张，
于是我们就想方设法地在别的模块中节省IO 口，好不容易挤出一两个IO 口，却
发现仍然不够用，实在没办法了就添加一个IC 来扫键。一个IC 虽然价格不高，
但对于大批量生产而且产品利润低的厂家来说，这是一笔不菲的开支!
那，我们能不能想到比较好的扫键方法：用最少的IO 口，扫最多的键？可以吗？-Doing the project (engineering), we often use the relatively large number of keys, and the IO resource constraints, so we are trying to save in another module IO ports, finally out of one or two IO ports, only to find is still not enough there is really no other way to add an IC to sweep on the keys. Although the price of an IC is not high, but low profits, high-volume production and product manufacturers, this is spending a lot of money! That, we can not think of a better scan key method: with a minimum of IO ports, scan Most of the keys? OK?
- 2022-08-10 23:32:47下载
- 积分：1
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这个是单片机和电脑进行通信的单片机作为上位机向电脑发送数据...
这个是单片机和电脑进行通信的单片机作为上位机向电脑发送数据-This is a single-chip and single-chip computer to communicate to the computer as a host computer to send data
- 2023-02-27 08:20:03下载
- 积分：1
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countdown for A51 source
倒计时器 A51源程序 -countdown for A51 source
- 2022-01-26 02:32:43下载
- 积分：1
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在51等单片机中使用PC键盘的源码
在51等单片机中使用PC键盘的源码-in 51 other microprocessor using a PC keyboard FOSS
- 2022-01-26 00:46:48下载
- 积分：1
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RTL8100 10M
RTL8100 10M-100M自适应以太网芯片-two 10M-100M adaptive Ethernet chip
- 2022-02-15 16:34:18下载
- 积分：1
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学习C51时写的数码灯程序,提供给刚学单片机程序的朋友参考
学习C51时写的数码灯程序,提供给刚学单片机程序的朋友参考-When learning to write C51 digital light process, available to just school friends Singlechip procedure reference
- 2023-08-29 16:50:02下载
- 积分：1
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用AVR
用AVR-ATMEGA8驱动手动机器人整个控制，该程序在机器人上成功调试-AVR-ATMEGA8 drive with manual control of the robot, the program in debug robot successfully
- 2022-07-14 17:29:58下载
- 积分：1
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非接触式无线巡更系统实现讲解，希望能给大家带来帮助
非接触式无线巡更系统实现讲解，希望能给大家带来帮助-Non-contact wireless realize on Patrol System, I hope everyone can help
- 2022-03-21 23:15:01下载
- 积分：1
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程序的规划，从开始到结束都有比较详尽的解说，对初学者到比较成熟有帮助...
程序的规划，从开始到结束都有比较详尽的解说，对初学者到比较成熟有帮助-Program planning, from start to finish has a more detailed explanation, to be helpful for beginners to the more mature
- 2022-06-15 23:37:05下载
- 积分：1
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CUP芯片c8051F005,型号为LCM09CY的8段式段式显示器显示程序
CUP芯片c8051F005,型号为LCM09CY的8段式段式显示器显示程序-CUP chip, the models for the eight LCM09CY Segment Segment Display procedures
- 2023-07-05 11:20:03下载
- 积分：1
