富芮坤蓝牙FR8016H规格书，上海富芮坤微电子有限公司，成立于2014年，公司总部位于上海张江高科技园区。是一家致力于射频集成电路芯片的设计、研发及产品销售的集成电路设计企业。
公司拥有一支高素质、经验丰富的技术研发团队，研发能力强，能够独立完成从芯片开发到应用的整体解决方案。我们的芯片开发人员直接对接客户支持，能够快速响应客户的各类需求，迭代更新，一切以客户利益为本。
Freikon Bluetooth fr8016h specification, Shanghai freikon Microelectronics Co., Ltd., established in 2014, is headquartered in Shanghai Zhangjiang High Tech Park. Is an integrated circuit design company dedicated to the design, R & D and product sales of RFIC chips.
The company has a high-quality and experienced technology R & D team with strong R & D ability, which can independently complete the overall solution from chip development to application. Our chip developers directly connect with customer support, can quickly respond to all kinds of customer needs, iterative update, all in the interests of customers. (2020-12-28, C/C++, 3770KB, 下载1次)
有女朋友的程序员想必早已提前抓耳挠腮，想着怎么给女朋友惊喜了。前天想着写个明信片，但是去的早了，邮局没开门，而且自己自从接触了计算机，之前高中语文留下的才情几乎丧失殆尽，现在写首诗或者写封情书，真是比学习一门语言还难。做个网页？无奈没有基础，再说这种私密的东西也不好交给别人来做。最近在学习R语言，刚看过里面的时间处理函数功能，感觉很强大，自己有比较熟悉c语言，不如。。。用程序计算我们在一起多少天了吧！
Programmers with girlfriends must have scratched their ears and scratched their cheeks in advance, thinking about how to surprise their girlfriends. I wanted to write a postcard the day before yesterday, but I went early, the post office didn't open, and since I got in touch with the computer, the talent left by Chinese in high school was almost lost. Now it's more difficult to write a poem or a love letter than to learn a language. Make a web page? But there is no foundation. Besides, it's not easy to leave this kind of private things to others. Recently, I was learning R language. I just saw the function of time processing function in R language. I feel very powerful. I am familiar with C language. I'd better... Program how many days we've been together! (2020-05-10, C/C++, 12KB, 下载0次)
（1）心电信号预处理
心电信号是一种低频且含有众多噪声干扰的信号。针对心电信号存在的
噪声干扰问题，本文采用了平稳小波变换结合双变量阈值的方法对其进行去 噪处理。通过对心电信号进行八层平稳小波变换，得到不同的小波系数，采
用双变量阈值函数表达式对其进行处理得到新的小波系数，最后进行逆平稳
小波变换实现小波重构，完成心电信号去噪。Matlab 仿真结果显示，本文算
法的准确率较高，信噪比达到 84.5934dB。 （2）心电信号波形识别
反映心电信号的特征部分往往是信号的突变点，因此需要对心电信号的
突变点进行识别检测。本文通过采用二次 B 样条小波对去噪后的心电信号
进行四层平稳小波变换，在第四尺度上对心电信号的 R 波进行波形检测。 在第二尺度上以正确检测 R 波为基础，实现 Q 波和 S 波的波峰、起始点及
终止点检测。为了保证检测精度，本文设置了误检漏检机制。最后在第五尺 度实现了 P 波和 T 波波峰、起始点及终止点检测。仿真结果表明本文的算
法检测精度较高，准确率达到 99.81%。
This paper proposes an efficient method of ECG signal denoising using the adaptive dualthreshold filter (ADTF) and the discrete wavelet transform (DWT). The aim of this method isto bring together the advantages ofthese methods in order to improve the filtering ofthe ECGsignal. The aim of the proposed method is to deal with the EMG noises, the power lineinterferences and the high frequency noises that could perturb the ECG signal. This algorithm is based on three steps of denoising, (2020-03-06, C/C++, 3073KB, 下载6次)
DS3231MPMB1外设模块提供了连接DS3231M实时时钟(RTC)所需的硬件电路，适用于采用可配置成I2C通信Pmod?扩展端口的系统。IC为低成本和高精度I2C RTC。该器件包含电池输入端，断开主电源时仍可保持精确计时。集成微机电系统(MEMS)提高了器件的长期精确度，并减少了生产线的元件数量。器件采用与通用器件DS3231C RTC相同的封装。
The ds3231mpmb1 peripheral module provides the hardware circuit needed to connect the ds3231m real-time clock (RTC), which is suitable for the system that can be configured as an I? C communication PMOD? Expansion port. IC is low cost and high precision I? C RTC. The device includes a battery input, which can keep accurate timing when the main power supply is disconnected. Integrated micro electro mechanical system (MEMS) improves the long-term accuracy of devices and reduces the number of components in the production line. The device uses the same package as the general device ds3231c RTC. (2020-02-06, C/C++, 604KB, 下载0次)
现在有N列火车自东向西依次开过来了，按照到达的先后次序编号为0号到N-1号。根据调度局的要求，小城的调度站要改变这些列车驶离该城的顺序。为了达到这一目的，调度站在任意时刻可以执行以下三种操作之一：
1) 如果调度站还有剩余空间，则可以令下一列开来的火车进入调度站；
2) 如果调度站内有列车，则可以令调度站最前方的火车离开调度站并驶离该城；
3) 可以命令下一列开来的火车不经过调度站而直接驶离小城。
不过小城的调度站实在太小了，只能容纳M列火车，请帮忙确认调度站能否完成任务。
【例子】如果有4列火车开来，调度站可以容纳2列火车，调度局要求火车按照2、1、3、0的顺序驶离A城，则此任务可满足，一种可能的方案如下：
Step 1：火车0进入调度站；
Step 2：火车1进入调度站；
Step 3：火车2不经过调度站驶离小城；
Step 4：火车1从调度站驶离小城；
Step 5：火车3不经过调度站驶离小城；
Step 6：火车0从调度站驶离小城；
当然，你只需要回答是否可行，不需要列出一种可行方案。
There is a railway from the east to the West running through the small town, which has a train control station (2019-12-01, C/C++, 1KB, 下载1次)
麦克正如我们所知的已快乐地结婚，在上个月他胖了70磅。因为手指上的脂肪过多，使他连给他最亲密的朋友斯拉夫克写一个电子邮件都很困难。
每晚麦克都详细地描述那一天他所吃的所有东西，但有时当他只想按一次某键时往往会按了不止一次，并且他的胖手指还会碰到他不想要按的键，麦克也知道自己的手指有问题，因此他在打字的时候很小心，以确保每打一个想要的字符时误打的字符不超过3个，误打的字符可能在正确字符之前也可能在其之后。
当斯拉夫克多次收到读不懂的电子邮件后，他总是要求麦克将电子邮件发3遍，使他容易读懂一点。
编写程序，帮助斯拉夫克根据他所收到的三封电子邮件求出麦克可能写出的最长的信。
Mike, as we all know, has been happily married. He gained 70 pounds last month. Because he had too much fat on his fingers, it was difficult for him to write an e-mail to his closest friend, Slavic.
Every night Mike describes in detail everything he eats on that day, but sometimes he pushes more than once when he only wants to press a certain key, and his fat finger meets the key he doesn't want to press. Mike also knows that his finger is in trouble, so he's very careful when typing to make sure he thinks every time. No more than three characters are typed incorrectly when the character is to be used, and the character typed incorrectly may be before or after the correct character.
When Slavic received e-mails that he could not read many times, he always asked Mike to send them three times to make them easier to read.
Write a program to help Slavk find out the longest letter Mike could write based on the three e-mails he received. (2019-06-18, C/C++, 447KB, 下载0次)
题目二：《销售管理系统》
系统基本信息
用 户 信 息：用户名，用户密码，用户权限。
用户分两类：系统管理员、营业员。
商品基本信息： 商品编号、商品名称、销售价格、折扣率、生产厂家、库存数量。
会员卡信息：卡号、身份证号、姓名、电话号码、积分。
销售信息：销售流水号、总金额、卡号、积分。
销售明细：销售流水号、商品编号、数量、单价。
Topic two: "sales management system"
Basic information of system
User information: user name, user password, user permissions.
There are two types of users: system administrators and salesmen.
Basic commodity information: commodity number, commodity name, sales price, discount rate, manufacturer, inventory quantity.
Membership card information: card number, ID card number, name, telephone number, integral.
Sales information: sales volume code, total amount, card number and integral.
Sales details: sales volume code, commodity number, quantity, unit price.
Functional requirements
(1) user management
User login.
Modify the initial password.
(2) basic information management (administrator's permission)
Input: input basic information of goods.
Delete: delete the basic information of the specified commodity.
Enquiry: inquire the basic information of the commodity according to the commodity number. (2018-10-29, C/C++, 331KB, 下载6次)
在整体框架都已经搭建好了，开发者只用实现业务功能。并且敏捷开发框架内已经集成了大量业务模板。大量的公共组件，开发人员只需要根据开发向导进行设置就可速度完成开发工作。让APP开发的成本可以降低90%左右，这种免编程自己制作手机APP的方法，对于没有技术团队、雄厚资本的中小企业及个人创业者来说，无疑是巨大的好消息。
When the overall framework has been built, developers only use their business functions. And a large number of business templates have been integrated in the agile development framework. A large number of common components, developers only need to set up according to the development wizard can complete the development work quickly. Let the cost of APP development can be reduced by about 90%. This method of making mobile phone APP without programming is undoubtedly great good news for small and medium-sized enterprises and individual entrepreneurs without technical teams and strong capital. (2018-10-24, C/C++, 306KB, 下载1次)
1 用存储器或算法得到信源。
2 用DA转换器输出一函数信号（正弦、方波、三角、锯齿等，频率1000Hz），可以用示波器进行波形观察。
3 用数码管或LCD显示输出参数。
4 用功能键切换各信号的输出。
发挥部分：
1通过键盘，可修改波的频率。每按一次键，频率值进给或后退1倍，频率范围不限。
2通过按键可以修改输出波形的幅度。
3按键时，蜂鸣器发出提示音，表示按键有效。
4数码管或LCD显示的内容可以用频率值和周期值切换表示。
1 use memory or algorithm to get the source.
2 use DA converter to output a function signal (sine, Fang Bo, trigonometry, sawtooth, etc. frequency 1000Hz).
3 use the digital tube or LCD to display the output parameters.
4 switch the output of each signal with the function key.
Play a part:
1 through the keyboard, the frequency of the wave can be modified. Each time the button is pressed, the frequency value is fed or retreated 1 times, and the frequency range is not limited.
2 the amplitude of the output waveform can be modified by the key.
When the 3 button is pressed, the buzzer gives out the prompting sound, which means the key is effective.
4 the contents of digital tube or LCD display can be switched by frequency value and cycle value. (2018-05-11, C/C++, 49KB, 下载0次)
1.用存储器或算法得到信源。
2.用DA转换器输出一函数信号（正弦、方波、三角、锯齿等，频率1000Hz），可以用示波器进行波形观察。
3.用数码管或LCD显示输出参数。
4.用功能键切换各信号的输出。
发挥部分：
1. 通过键盘，可修改波的频率。每按一次键，频率值进给或后退1倍，频率范围不限。
2.通过按键可以修改输出波形的幅度。
3.按键时，蜂鸣器发出提示音，表示按键有效。
4.数码管或LCD显示的内容可以用频率值和周期值切换表示。
1. use memory or algorithm to get the source.
2. use DA converter to output a function signal (sine, Fang Bo, trigonometry, sawtooth, etc. frequency 1000Hz).
3. use the digital tube or LCD to display the output parameters.
4. switch the output of each signal with the function key.
Play a part:
1. through the keyboard, the frequency of the wave can be modified. Each time the button is pressed, the frequency value is fed or retreated 1 times, and the frequency range is not limited.
2. the amplitude of the output waveform can be modified by the key.
When the 3. button is pressed, the buzzer gives out the prompting sound, which means the key is effective.
4. the contents of digital tube or LCD display can be switched by frequency value and cycle value. (2018-05-11, C/C++, 51KB, 下载0次)
我们设计的异步电机变频调速器以TMS320F28035芯片为控制核心，通过输出三相PWM波控制智能功率模块IPM驱动三相异步电机。我们使用空间矢量SVPWM算法，并对其进行了优化。采用异步电机无传感器测速算法省去了昂贵的光电编码器，大大节省了成本。同时开创性的研发了自动根据运行环境调节的自适应变频算法，使我们的变频调速器可以在电网条件恶劣的乡村山区工作，由此该变频器已被一家民用水泵生产企业预订。
We design the asynchronous motor frequency conversion governor with TMS320F28035 chip as the control core, and output three-phase PWM wave to control the intelligent power module IPM to drive the three-phase asynchronous motor. We use space vector SVPWM algorithm and optimize it. The sensorless speed measurement algorithm of asynchronous motor eliminates the expensive photoelectric encoder and greatly saves the cost. At the same time, pioneering research automatic conversion algorithm based on adaptive adjustment of the operating environment, we can make VVVF in power grid conditions of rural area, thus the inverter has been a civil pump manufacturer reservation. (2017-10-19, C/C++, 5214KB, 下载53次)
该部分指定了应用法定 OBD 的 CAN 系统相关的发送要求，该通讯网络由一
个配有单个或多个相关发送的 ECU 和外部测试设备构成。 该部分基于对法定
OBD 指定了标准限制的 ISO 15765-2，ISO11898-1 和 ISO11898-2 的基础上
并未指定车辆内的 CAN 总线结构。应用法定 OBD 的车辆应遵守外部测试设
备的要求。
This section specifies the sending requirements associated with the application of the OBD system for the statutory CAN
Each consists of a single or multiple associated ECU and external test equipment. This section is based on the statutory
OBD specifies standard restrictions based on ISO 15765-2, ISO11898-1, and ISO11898-2
The CAN bus structure in the vehicle is not specified. Vehicles subject to statutory OBD shall comply with external test settings
Preparation requirements. (2017-08-11, C/C++, 925KB, 下载12次)