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Description: 利用52单片机通过8254定时器实现控制电机的PWM调速程序，可实现开始，停止，加速，减速。
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Size: 13495 |
Author: 李浩楠 |
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Description: This is a photo of a general purpose timer/counter card you can wirewrap in a weekend. It plugs into your PC s ISA bus just like a sound or modem card. It gives high-resolution timing (microseconds). Because of its programmablity, it is very powerful and flexible. You can even control DC or servo motors using pulse-width modulated (PWM), or stepper motors using its square wave capabilities. The figure below is the actual output (square wave) from the 8254 card captured by an oscilloscope:
Platform: |
Size: 10545 |
Author: 海应 |
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Description: This a p熟悉SQL SERVER 2000的数据库管理员都知道，其DTS可以进行数据的导入导出，其实，我们也可以使用Transact-SQL语句进行导入导出操作。在 Transact-SQL语句中，我们主要使用OpenDataSource函数、OPENROWSET 函数，关于函数的详细说明，请参考SQL联机帮助。利用下述方法，可以十分容易地实现SQL SERVER、ACCESS、EXCEL数据转换，hoto of a general purpose timer/counter card you can wirewrap in a weekend. It plugs into your PC s ISA bus just like a sound or modem card. It gives high-resolution timing (microseconds). Because of its programmablity, it is very powerful and flexible. You can even control DC or servo motors using pulse-width modulated (PWM), or stepper motors using its square wave capabilities. The figure below is the actual output (square wave) from the 8254 card captured by an oscilloscope: -This a p familiar with the SQL Server 2000 database administrators know, the DTS can import data is derived, in fact, we can also use Transact-SQL for importing and exporting operation. The Transact-SQL statements, we mainly use OpenDataSource function, OPENROWSET function, the function of the details, please refer to SQL online help. Use the following method, it is easy to SQL Server, Access, Excel data conversion, HOTO of a general purpose timer / counter card you can wirewrap in a weekend. It plugs into your PC ISA bus s just like a sound card or modem. It gives high-resolution timing (microseconds). Because of its programmablity, it is very powerful and flexible. You can even control or DC servo motors using pulse-width modulated (PWM), or Stepper motors using its square wave capabi
Platform: |
Size: 5788 |
Author: 海应 |
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Description: This is a photo of a general purpose timer/ 在我们写的程序当中,总有一些配置信息需要保存下来,以便完成程序的功能,最简单的办法就是将这些信息写入INI文件中,程序初始化时再读入.具体应用如下:counter card you can wirewrap in a weekend. It plugs into your PC s ISA bus just like a sound or modem card. It gives high-resolution timing (microseconds). Because of its programmablity, it is very powerful and flexible. You can even control DC or servo motors using pulse-width modulated (PWM), or stepper motors using its square wave capabilities. The figure below is the actual output (square wave) from the 8254 card captured by an oscilloscope: -This a photo of a general purpose timer. When we write program, There is always some configuration need to be saved, so that we can finish the function of the program.The most simple way is write these infomation to the INI file. It is read by the program during initialization,it is used as follows: counter card you can wirewrap in a weekend. It plugs into your PC s ISA bus just like a sound or modem card. It gives high-resolution timing (microseconds). Because of its programmablity, it is very powerful and flexible. You can even control DC or servo motors using pulse-width modulated (PWM), or stepper motors using its square wave capabilities. The figure below is the actual output (square wave) from the 8254 card captured by an oscilloscope:
Platform: |
Size: 6333 |
Author: 海应 |
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Description:
Platform: |
Size: 10240 |
Author: 海应 |
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Description: This a p熟悉SQL SERVER 2000的数据库管理员都知道，其DTS可以进行数据的导入导出，其实，我们也可以使用Transact-SQL语句进行导入导出操作。在 Transact-SQL语句中，我们主要使用OpenDataSource函数、OPENROWSET 函数，关于函数的详细说明，请参考SQL联机帮助。利用下述方法，可以十分容易地实现SQL SERVER、ACCESS、EXCEL数据转换，hoto of a general purpose timer/counter card you can wirewrap in a weekend. It plugs into your PC s ISA bus just like a sound or modem card. It gives high-resolution timing (microseconds). Because of its programmablity, it is very powerful and flexible. You can even control DC or servo motors using pulse-width modulated (PWM), or stepper motors using its square wave capabilities. The figure below is the actual output (square wave) from the 8254 card captured by an oscilloscope: -This a p familiar with the SQL Server 2000 database administrators know, the DTS can import data is derived, in fact, we can also use Transact-SQL for importing and exporting operation. The Transact-SQL statements, we mainly use OpenDataSource function, OPENROWSET function, the function of the details, please refer to SQL online help. Use the following method, it is easy to SQL Server, Access, Excel data conversion, HOTO of a general purpose timer/counter card you can wirewrap in a weekend. It plugs into your PC ISA bus s just like a sound card or modem. It gives high-resolution timing (microseconds). Because of its programmablity, it is very powerful and flexible. You can even control or DC servo motors using pulse-width modulated (PWM), or Stepper motors using its square wave capabi
Platform: |
Size: 5120 |
Author: 海应 |
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Description:
Platform: |
Size: 13312 |
Author: 李浩楠 |
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Description: 利用AT89S52控制8254产生脉宽调制信号-AT89S52 generated using pulse width modulation control signal 8254. . . .
Platform: |
Size: 11264 |
Author: ledkuang |
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Description: 8254定时器产生PWM脉冲,非常偏却是机器人舵机控制的关键点-8254 PWM timer pulse generated
Platform: |
Size: 2084864 |
Author: 北京 |
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Description: WM信号产生电路计数芯片8254部分,PWM信号产生电路单片机部分-The WM signal generating circuit chip count of 8254 parts, PWM signal generating circuit chip part
双语对照
Platform: |
Size: 1024 |
Author: zl |
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