jiangya

说明：  温度传感器数据采集程序，并在数码管上显示。(The temperature sensor data acquisition program is displayed on the digital tube.)

nRF24LE1中文数据手册 , 翻译自V1.6(nRF24LE1 datasheet)

说明：  15路输入输出，232串口控制 STC12C5A60S2(15 input and output, 232 serial port control STC12C5A60S2)

说明：  复制其中的“UV4.CDB”文件，复制到KEIL4的“UV4”文件夹中；(Copy the "uv4. CDB" file to the "uv4" folder of keil4;)

双馈风机及控制 PSCAD模型 含串补和谐振源(DFIG modeling and control)

大多数自行车速度表工作通过使用霍尔效应传感器固定在自行车前叉。磁铁是附加到前轮上的辐条之一,它将与霍尔效应开关一次革命的车轮。速度计监测传感器计数轮革命。如果知道车轮的直径,距离可以很容易地计算如果你知道有多少革命的车轮。此外,如果时间完成革命,平均速度也可以计算出来。 对于这个问题,您将编写一个程序来确定总距离(英里)和平均速度(英里每小时)考虑到车轮直径,革命的数量和总时间的旅行。你可以假定前轮从未离开地面,并没有下滑或打滑。(Most bicycle speedometers work by using a Hall Effect sensor fastened to the front fork of the bicycle. A magnet is attached to one of the spokes on the front wheel so that it will line up with the Hall Effect switch once per revolution of the wheel. The speedometer monitors the sensor to count wheel revolutions. If the diameter of the wheel is known, the distance traveled can be easily be calculated if you know how many revolutions the wheel has made. In addition, if the time it takes to complete the revolutions is known, the average speed can also be calculated. For this problem, you will write a program to determine the total distance traveled (in miles) and the average speed (in Miles Per Hour) given the wheel diameter, the number of revolutions and the total time of the trip. You can assume that the front wheel never leaves the ground, and there is no slipping or skidding.)

将小文件写入外部SPI FLASH中，现将文件写入到单片机的某块flash区域，然后在写入外部falsh，适合小文件(Write the small file to the external SPI FLASH, now write the file to a single chip flash area of the single chip, and then write the external falsh to suit the small file.)

将每2片74595做级联，然后再将级联之后的所有时钟线与数据再并联在一起最后对每一组的锁存控制线做单独控制.(Application to do a project, the more I/O, applied to the 74,595 to do the extension, but you want to mount multi-chip 74595, is bound to have a lot to use the I/O port, in order to solve this problem, I will be every 2 sheet 74595 do cascade, and then cascade after all the clock line and the data in parallel and then together (i.e., all 74595 communal clock and data lines, it only occupies two I/O port lines) Finally, for each group latch control lines do individually controlled (equivalent to Chip Select), so that a hardware circuit by a great degree of simplification, both procedures can also share a driving subroutine 74595, to control the type of lock inventory control line, serial data is sent to the port 74595 cascade module. As a result of the hardware and software have a large degree of optimization.)

stm32f030&ml5238 use for bms4850 ups.

12864实验例子代码 hex文件 c语言 汇编语言(12864 Experimental Example Code hex file c language assembly language)