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说明： 编写带缓存的文件操作类
从执行体程序库中的CLLogger类可知，通过缓存要写入文件中的数据，能够提高读写磁盘的性能
请编写一个文件操作的封装类，其要求如下：
需要提供open/read/write/lseek/close等函数的封装函数
该类要提供数据缓存服务。
调用该类的写操作接口时，数据要首先写到缓存，然后再根据策略写到文件中。
调用该类的读操作接口时，该类能根据策略缓存读出的数据
读写缓存要保持一致性
(From the implementation of the CLLogger class library, we can know, through the cache to write data in the file, you can improve the performance of the read and write disk
Please write a package for the operation of the class, and its requirements are as follows:
The encapsulation function of open/read/write/lseek/close and other functions is required.
The class to provide data cache services.
When the write operation interface of the class is called, the data must first be written to the cache, and then the policy is written to the file.
When a read operation interface of the class is called, the class can read the data according to the policy cache.
Read/write cache to maintain consistency)
- 2016-11-05 21:27:34下载
- 积分：1
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svpwm
SVPWM algorithm simulation SVPWM algorithm simulation(SVPWM algorithm simulation SVPWM algorithm simulation SVPWM algorithm simulation)
- 2016-06-26 22:28:38下载
- 积分：1
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Platform-SDK---April-2005-Edition
Platform SDK-April 2005 Edition English 英语种子下载(Platform SDK- April 2005 Edition (English) Download.)
- 2015-01-20 19:28:38下载
- 积分：1
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MR_R2
thhis is very useful article in development and create for microcomputer adn microcontroller system . By knowing the assembler method some people can use programmer make their own system and controlling device with included this references
- 2010-01-03 16:10:09下载
- 积分：1
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STM32
STM32驱动CD4067控制多个红外线进行距离测量(Stm32 drive cd4067 control multiple infrared distance measurement)
- 2015-07-08 11:58:48下载
- 积分：1
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sim900a
单片机控制SIM900A模块 短信电话语音提示按键操作远程控制 短信报警 带电路原理图 代开发的项目 发上来共享(SCM control module SMS phone voice prompts SIM900A key operation SMS alarm with remote control circuit diagram generation development projects made up sharing)
- 2014-12-07 16:53:55下载
- 积分：1
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绿色版(见内部图)
说明： 基于MSP430F5438A的AD9854驱动，AD9854的DDS核具有48位的频率分辨率（在300M系统时钟下，频率分辨率可达1uHZ）。输出17位相位截断保证了良好的无杂散动态范围指标。AD9854允许输出的信号频率高达150MHZ(Based on the AD9854 driver of MSP430F5438A, the DDS core of AD9854 has a frequency resolution of 48 bits (up to uHZ at 300 M system clock). Output 17-bit phase truncation ensures a good dynamic range index without spurious. AD9854 permits up to 150 MHZ of output signal frequency)
- 2020-06-20 02:20:02下载
- 积分：1
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Microcomputer-principle.rtf
存储器（RAM 6264）扩展
可编程并行接口（8255）扩展
可编程计数/定时器（8253）扩展
A/D、D/A转换
可编程串行通信接口（8251）扩展 (Memory (RAM 6264) extended programmable parallel interface (8255) extended the programmable counter/timer (8253) Expansion A/D, D/A conversion programmable serial communication interface (8251) extended)
- 2013-05-22 21:23:47下载
- 积分：1
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K60版电磁
智能车竞赛电磁组参考程序，与大家分享，与大家一起学习(Smart car competition electromagnetic group reference program, to share with you)
- 2018-06-18 17:58:49下载
- 积分：1
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kdfd
宽频放大器,有以下功能:
预置增益,增益加/减,显示输出电压有效值,自动增益
显示有效值.
增益输入及加减
自动增益没有实现(Wideband amplifier has the following functions: Preset gain, gain plus/minus, the display output voltage RMS, automatic gain display rms. AGC gain input and subtraction is not implemented)
- 2013-07-19 21:19:44下载
- 积分：1
