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Description: 1).能够实现对班级学生基本信息的录入，包括学生的学号，姓名，性别，专业，民族以及出生年月等。 2).能够实现对学生基本信息的修改。 3).根据学号对学生信息进行查询。 4).能够删除某些学生的信息。-1)able to insert the basic information of students,including number,gender,major,nation and birthday.
2)able to modify basic information of students.
3)query student s information by his/her number.
4)delete information of certain students.
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Size: 135168 |
Author: |
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Description: PHILIP公司的P89C669串口0，1的驱动源码。调试环境KEILC51. 需要加到MAIN()中才能运行。JACK.REN-Philip's Serial Set 0,1 drive source. KEILC51 debugging environment. MAIN need to add () to run. JACK.REN
Platform: |
Size: 2048 |
Author: 任永 |
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Description: 转载别人ds18b20proteus作品希望对proteus library里没有ds18b20的xdjm们有用！-reproduced works ds18b20proteus others hope to proteus librar There's no y ds18b20 the xdjm were useful!
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Size: 122880 |
Author: 曹原 |
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Description: DALLAS iBUTTONS的软件资源,有C代码示例-Dallas iBUTTONS software resources and C code examples
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Size: 294912 |
Author: IT民工 |
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Description: 着是一个用VB来实现的灰色模型GM(1,1)的程序，很简单的大家来-with a VB is to achieve the gray model GM (1,1) process, a very simple for everyone to s
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Size: 1024 |
Author: 赵云 |
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Description: VHDL实现SPI功能源代码
-- The SPI bus is a 3 wire bus that in effect links a serial shift
-- register between the "master" and the "slave". Typically both the
-- master and slave have an 8 bit shift register so the combined
-- register is 16 bits. When an SPI transfer takes place, the master and
-- slave shift their shift registers 8 bits and thus exchange their 8
-- bit register values.-SPI realize the functional VHDL source code The SPI bus is a 3 wire bus that in effect links a serial shift register between the
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Size: 65536 |
Author: 阿飞 |
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Description: SPI 4线接口spec,对硬件和驱动有兴趣的朋友可以下载-SPI 4-wire interface spec, the hardware and drivers are interested in a friend can be downloaded
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Size: 157696 |
Author: lee |
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Description: 1-wire总线的开发，用一根线，可以实现同类的功能-1-wire bus development, with a line, you can achieve similar functionality
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Size: 6144 |
Author: 李立 |
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Description: // This program accesses a SPI EEPROM using polled mode access. The F06x MCU
// is configured in 4-wire Single Master Mode, and the EEPROM is the only
// slave device connected to the SPI bus. The read/write operations are
// tailored to access a Microchip 4 kB EEPROM 25LC320. The relevant hardware
// connections of the F06x MCU are shown here:
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Size: 72704 |
Author: 蓝天 |
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Description: 本例载波频率为20KHz，或载波周期为50μs。DSP晶振10MHz，内部4倍频，时钟频率为40MHz，计数周期为25ns。假设调制波频率由外部输入（1～50Hz），并转换成合适的格式（本例为Q4格式）。调制系数M为0～0.9。死区时间1.6μs。最小删除脉宽3μs。
主程序的工作是根据输入的调制波频率计算N、2N和M值。
-Example for the carrier frequency 20KHz, or carrier period is 50μs. DSP crystal 10MHz, internal 4 multiplier, the clock frequency of 40MHz, counting cycle 25ns. Assuming wave frequency modulation by external input (1 ~ 50Hz), and converted into an appropriate format (in this case for Q4 format). Modulation coefficient M is 0 ~ 0.9. Dead time 1.6μs. Delete the smallest pulse width 3μs. The work of the main program is based on input frequency modulation wave calculation of N, 2N and M values.
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Size: 15360 |
Author: liuhx |
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Description:
基于freescale MC9S12XF512 MCU，芯片自带Flexray通信控制器。可实现高达10Mb/s的Flxray通信.本程序主要功能：
1) 500ms实时中断。
2) SPI MASTER 运行于500kHz。
3) Flexray 总线以1.25Mbit/s 通信。-Based on freescale MC9S12XF512 MCU, chip communications controller Flexray own. Can achieve up to 10Mb/s communication of Flxray. This procedure main functions: 1) 500ms real-time interrupt. 2) SPI MASTER running on 500kHz. 3) Flexray bus to 1.25Mbit/s communications.
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Size: 798720 |
Author: 阿昆 |
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Description: *** *** *** *****
** Two wire/I2C Bus READ/WRITE Sample Routines of Microchip s
** 24Cxx / 85Cxx serial CMOS EEPROM interfacing to a
** PIC16C54 8-bit CMOS single chip microcomputer
** Revsied Version 2.0 (4/2/92).
**
** Part use = PIC16C54-XT/JW
** Note: 1) All timings are based on a reference crystal frequency of 2MHz
** which is equivalent to an instruction cycle time of 2 usec.
** 2) Address and literal values are read in octal unless otherwise
** specified.
-************************* Two wire/I2C Bus READ/WRITE Sample Routines of Microchip s** 24Cxx/85Cxx serial CMOS EEPROM interfacing to a** PIC16C54 8-bit CMOS single chip microcomputer** Revsied Version 2.0 (4/2/92).**** Part use = PIC16C54-XT/JW** Note: 1) All timings are based on a reference crystal frequency of 2MHz** which is equivalent to an instruction cycle time of 2 usec.** 2) Address and literal values are read in octal unless otherwise** specified.
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Size: 2048 |
Author: 刘星星 |
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Description: SD卡读卡器模块的VHDL及软件驱动代码，可作为外设挂接在Avalon总线上。支持以SD模式、4线模式读取。在24MHz时钟驱动下读取速率可达8MByte/s-SD card reader module and software drivers VHDL code, can be articulated as a peripheral bus in Avalon. To support the SD model, 4-wire mode read. Driven by the 24MHz clock rate up to read 8MByte/s
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Size: 18432 |
Author: ctqy |
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Description: ADS7846/7843芯片 适合用在4线制触摸屏，它通过标准SPI协议和CPU通信，操作简单，精度高，当触摸屏被按下时（即有触摸事件发生）则ADS7846向CPU发中断请求，CPU接到请求后，应延时一下再响应其请求，目的是为了消除抖动使得采样更准确。如果一次采样不准确，可以尝试多次采样取最后一次结果为准，目的也是为了消除抖动。-ADS7846/7843 chip suitable for use at 4-wire Touch Panel, which through a standard SPI protocol and CPU communications, easy operation and high precision, when the touch screen is pressed (ie, touch case has happened) is ADS7846 hair to the CPU interrupt request, CPU access to the request should be delayed and then respond to their request, aimed at the elimination of jitter in order to make a more accurate sampling. If a sample is not accurate, you can try many times the last time check the results of sampling, whichever it is also aimed at the elimination of jitter.
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Size: 1024 |
Author: 不动 |
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Description: 达拉斯 1-Wire 主机通信 这份资料展示了如何把 1-Wire 主机通信在应用到一个AVR系统中，不仅仅是在软件方面，还有U(S)ART模式下的应用。-Dallas 1-Wire host communication display the information on how to host the 1-Wire communication AVR in the application to a system, not just in software, as well as U (S) ART mode applications.
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Size: 225280 |
Author: fuliaokai |
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Description: AVR Mega16的dallas公司18B20的测温程序-Dallas company' s AVR Mega16 temperature of the 18B20 procedure! !
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Size: 27648 |
Author: baby |
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Description: 这是一个利用MATLAB的GUI编的长直导线周围电磁场的可视化程序。-This GUI provides a visualization of the electromagnetic field induced by a current flowing in a straight wire. The tool also shows the current induced by a rectangular coil that is placed inside the electromagnetic field. The current is calculated using Ampere s Law and the Biot-Savart Law. This demo was created for educational demonstrations.
The user can modify the size and position of the coil, as well as the resistance. The current waveform and magnitude can also be specified.
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Size: 57344 |
Author: hinling |
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Description: 单总线的通信，通过一个例子着重讲解了单总线的通信和写0写1时隙。-The single main line s correspondence, explained the single main line s correspondence emphatically through an example and writes 0 writes 1 time slot.
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Size: 50176 |
Author: 王潇 |
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Description: 使用AVR单片机模拟成DS2450的bascomAVR程序，实现了模拟1wire从机的功能。程序使用bascom语言编写，程序构建简单明了，对使用其它语言编写模拟1wire程序也具有参考的作用-Simulated using the AVR microcontroller into the DS2450' s bascomAVR procedures to achieve a simulation 1wire slave function. Bascom language program uses the program to build simple and clear, the use of other languages analog 1wire program also has the role of reference
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Size: 336896 |
Author: 李璇 |
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Description: Although accurate digital thermometers
are now available at low cost, it remains
exciting and instructive to build one your-
self. The present circuit is particularly
intended to help the reader in the use of
a PIC processor Type PIC16F84 (see
www.microchip.com), a temperature sen-
sor with 1-Wire protocol Type DS1820
(see www.maxim-ic.com), an LCD screen
with 2x16characters (HD44780 com-
patible) and a light sensor with an LDR
that determines whether the background
lighting of the LCD should be on
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Size: 123904 |
Author: Ivan |
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