-
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
-
Msp430的flash读写文件配置文件，(msp430f427芯片)
Msp430的flash读写文件配置文件，(msp430f427芯片)-MSP430
- 2022-03-20 08:15:01下载
- 积分：1
-
SCM stopwatch program, the classic study of information through the authenticati...
单片机的秒表程序，经典的学习资料，通过验证，可以迅速的深入单片机编程的精髓-SCM stopwatch program, the classic study of information through the authentication, can be quickly in-depth the essence of single-chip programming
- 2022-02-07 14:38:55下载
- 积分：1
-
驱动与SDRAM PC133巴斯科姆AVR（达512兆或64MByte）
dirving SDRAM PC133 with BASCOM AVR(up to 512Mbit or 64MByte)
- 2022-07-18 19:29:04下载
- 积分：1
-
HT1621 LCD driver test procedures, assembly language preparation
ht1621液晶驱动的测试程序，汇编语言编写-HT1621 LCD driver test procedures, assembly language preparation
- 2022-06-03 13:19:46下载
- 积分：1
-
PIC18F458的AD采集源程序，经过测试完全可用
PIC18F458的AD采集源程序，经过测试完全可用-PIC18F458 source collection of AD, has been tested fully available
- 2022-06-01 00:17:54下载
- 积分：1
-
this program can support SLE4442, SLE4428 logic, FALSH, CPU card
本程序可以支持SLE4442、SLE4428、FALSH、CPU卡-this program can support SLE4442, SLE4428 logic, FALSH, CPU card
- 2022-01-25 15:44:04下载
- 积分：1
-
这是热电阻测温的程序，可以测量工业环境周围的温度
这是热电阻测温的程序，可以测量工业环境周围的温度-This is the thermal resistance measurement procedure, can measure the temperature of the surrounding industrial environment
- 2022-03-20 06:26:11下载
- 积分：1
-
atmega16L input capture classic trials have been validated
atmega16L输入捕获经典试验已经通过验证-atmega16L input capture classic trials have been validated
- 2022-03-10 10:02:34下载
- 积分：1
-
51读写U盘全套技术资料,原理图,KEIL C51原代码
51读写U盘全套技术资料,原理图,KEIL C51原代码-U disk 51 to read and write a full set of technical information, schematics, KEIL C51 original code
- 2023-07-05 10:05:18下载
- 积分：1
