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There are many different (and often confusing) terms associated
with clock
There are many different (and often confusing) terms associated
with clock-based devices. This application note attempts
to clarify these terms, and hence serves as a comprehensive
reference on clock terminology. This application note can be
divided into two sections. The first section describes and distinguishes
between various clock sources available today.
The second section defines and distinguishes between various
parameters used to describe clocks. This section also provides methods of measuring some of these parameters.
- 2022-03-25 16:32:15下载
- 积分:1
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Proteus的数码管仿真电路,希望对大家有点用,入门级的。
Proteus的数码管仿真电路,希望对大家有点用,入门级的。-Proteus simulation of the digital control circuit, in the hope that we are a bit used, entry-level.
- 2022-01-27 22:02:04下载
- 积分:1
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This is a microcontroller programming on the books, and I hope to you like SCM s...
这是一本讲述单片机编程的书籍,希望对各位喜欢单片机的同学有所帮助。-This is a microcontroller programming on the books, and I hope to you like SCM students some help.
- 2023-08-03 01:10:04下载
- 积分:1
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详细讲述单片机中SPI接口以及串行接口的原理和编程方法,很有价值...
详细讲述单片机中SPI接口以及串行接口的原理和编程方法,很有价值-detail microcontroller interface and SPI serial interface and programming method and of great value
- 2022-03-24 22:09:25下载
- 积分:1
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PCF8563时钟芯片驱动89C51
PCF8563 时钟芯片驱动 89C51
-PCF8563 clock chip driver 89C51
- 2022-04-25 04:55:00下载
- 积分:1
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51 MCU for rapid DES
用于51单片机的快速DES-51 MCU for rapid DES
- 2022-11-25 22:50:03下载
- 积分:1
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用C51实现的拼音输入法,这是改写的网友 embuffalo、独步上载在www.21ic.com自由发布区的由张凯原作的51上的拼音输入法程序。
原作使用...
用C51实现的拼音输入法,这是改写的网友 embuffalo、独步上载在www.21ic.com自由发布区的由张凯原作的51上的拼音输入法程序。
原作使用了一个二维数组用以查表,我认为这样比较的浪费空间,而且每个字表的索引地址要手工输入,效率不高。所以我用结构体将其改写了一下。就是大家现在看到的这个。
因为代码比较的大,共有6,000多汉字,这样就得要12,000 byte来存放GB内码,所以也是没办法的 :-(
编译结果约为3000h,因为大部分是索引表,代码优化几乎无效。
在Keil C里仿真芯片选用的是华邦的W77E58,它有32k ROM, 256B on-chip RAM, 1K on-chip SRAM (用DPTR1指针寻址,相当于有1K的片上xdata)。条件有限,没有上片试验,仿真而已。
打算将其移植到AVR上,但CodeAVRC与IAR EC++在结构体、指针的定义使用上似乎与C51不太一样,现在还未搞定。还希望在这方面有经验的网友能给予指导。-C51 with the Pinyin input method, which is rewritten netizens embuffalo. Unrivaled www.21ic.com available in the free publication of the original work by Kai-51 on the Pinyin input method procedures . Appreciate the use of a two-dimensional array for the look-up table, I think this is a waste of space. Each of the characters but the index table to manually input address, efficiency is not high. I use the structure to rewrite a bit. We see now is this. Because the code comparison, a total of 6, more than 000 Chinese characters, this must
- 2023-04-01 14:55:03下载
- 积分:1
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在c51下液晶显示块LCD20040411的编程实例。
在c51下液晶显示块LCD20040411的编程实例。-Under the liquid crystal display in the C51 block LCD20040411 programming examples.
- 2022-03-19 18:41:02下载
- 积分:1
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一个很好的电池充电程序,仅供参考
a good program for battery charge,only for reference
- 2023-01-21 18:00:03下载
- 积分:1
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用51单片机内部定时器实现数字钟功能,可以显示小时,分,秒,误差很小。...
用51单片机内部定时器实现数字钟功能,可以显示小时,分,秒,误差很小。-51 single-chip microcomputer with internal timer digital clock function, can display hours, minutes and seconds, the error small.
- 2022-04-24 17:53:48下载
- 积分:1