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汇编语言程序89C2051键盘输入源的使用
使用汇编语言的89C2051键盘输入程序源码-The use of assembly language program the 89C2051 keyboard input source
- 2022-03-03 23:36:08下载
- 积分:1
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按键扫描 51单片机加8279
8279通过74LS 138译码器扩展4×4键盘、6位显示器。
由3...
按键扫描 51单片机加8279
8279通过74LS 138译码器扩展4×4键盘、6位显示器。
由3-8译码器对SL0~SL2译出键扫描线,由另一3-8译码器译出显示器的位扫描线,并采用了编码扫描方式。
为了防止出现重键现象,扫描输出线高位SL3不参加键扫描译码。CPU对8279的监视采用了查询方式,故8279的中断请求信号IRQ悬空未用。
-Scan button 82,798,279 plus 51 single-chip decoder 74LS 138 through the expansion of 4 × 4 keyboard, the display 6. From 3-8 decoder SL0 ~ SL2 translated to the key scanning line, by another 3-8 decoder translated display scan line, and uses code scanning. In order to prevent the emergence of the phenomenon of re-key, scan the output line does not take part in high level SL3 scan decoding keys. CPU on the 8279 surveillance using the query mode, the 8279 interrupt request signal IRQ left unused.
- 2022-03-09 10:15:53下载
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rc500 c语言库函数,对RC500的开发提供了捷径
rc500 c语言库函数,对RC500的开发提供了捷径-rc500 c language library functions, the development of RC500 provides a shortcut
- 2022-02-15 07:52:04下载
- 积分:1
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Electronic code lock design
电子密码锁设计
-Electronic code lock design
- 2022-02-19 22:01:20下载
- 积分:1
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keil里面的例子,看看把
keil里面的例子,看看把-example, to see if the he
- 2022-05-25 22:01:26下载
- 积分:1
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基于ST7902驱动的12864LCD显示汉字、图片,显示自己做的字库汉字...
基于ST7902驱动的12864LCD显示汉字、图片,显示自己做的字库汉字-ST7902-driven based on 12864LCD display Chinese characters, pictures, show the character of their own characters
- 2022-08-07 00:28:38下载
- 积分:1
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实现51单片机的日历功能 用T2定时器作为基本时钟中断
实现51单片机的日历功能 用T2定时器作为基本时钟中断-The realization of the calendar features 51 single-chip using T2 as the basic clock timer interrupt
- 2022-08-19 01:06:57下载
- 积分:1
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Write their own temperature display program in the development of on
自己写的温度显示程序,在开发板上可以验证成功
-Write their own temperature display program in the development of on-board can verify the success of
- 2023-03-05 18:55:03下载
- 积分:1
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MSP
MSP-FET430X110 C语言例子程序-MSP-FET430X110 C language examples procedures
- 2022-03-19 04:55:03下载
- 积分:1
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24 系列存储器驱动
24 系列存储器驱动-24 Series memory drive
- 2023-01-06 00:05:04下载
- 积分:1