-
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
-
lcd 液晶屏驱动
lcd 液晶屏驱动-LCD screen driver
- 2022-03-06 22:43:01下载
- 积分:1
-
A RC531 Source Code for MIFARE card operations.
实现MIFARE卡操作的RC531源代码。-A RC531 Source Code for MIFARE card operations.
- 2022-01-21 19:27:52下载
- 积分:1
-
凌阳16位单片机的启动代码,它是源码,是凌阳的公司提供的
凌阳16位单片机的启动代码,它是源码,是凌阳的公司提供的-Sunplus 16-bit single-chip start-up code, it is the source code is provided by the company of Sunplus
- 2022-06-01 20:54:37下载
- 积分:1
-
c code at89s52 led design
c语言 基于AT89S52的彩灯设计 test
c code at89s52 led design-c code at89s52 led design
- 2022-03-28 16:05:00下载
- 积分:1
-
使用ICCAVR开发环境IDE。中心是atmel的AVR单片机上的移植,…
要用ImageCraft IDE for ICCAVR开发环境。 是ucos在atmel 的AVR单片机上的移植,具备 很高的参考价值!-use IDE for ICCAVR development environment. CENTER is in the ATMEL AVR on graft, with high reference value!
- 2022-01-27 19:32:55下载
- 积分:1
-
sed1335液晶显示控制器应用技术资料,应用广泛,必备工具。
sed1335液晶显示控制器应用技术资料,应用广泛,必备工具。-sed1335 LCD controller information technology, widespread use, essential tools.
- 2023-07-03 05:05:04下载
- 积分:1
-
关于 Cortex
关于 Cortex-M3 的中文介绍资料,包括对其结构,应用的介绍及解决方案举例。-With regard to the Chinese introduced the Cortex-M3, including its structure, applications and solutions for example the introduction.
- 2022-04-21 22:49:43下载
- 积分:1
-
单片机测试串口通信程序,使用KEIL c进行开发,适合初学者学习...
单片机测试串口通信程序,使用KEIL c进行开发,适合初学者学习-microcontroller serial communications testing procedures, the use of KEIL c develop suitable for beginners learning
- 2022-08-22 10:18:09下载
- 积分:1
-
很好的pid温控
代码,分享一下,
很好的pid温控
代码,分享一下,-Pid temperature control very good code, share,
- 2022-03-18 06:26:12下载
- 积分:1