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A Simplilearn Certificate Goes on LinkedIn Each Minute; Here’s How Krishna Kumar Built It From a Blog

17 years ago, Krishna Kumar started offering free PMP prep online. Today, it’s a leading digital upskilling platform that helps millions upskill in AI, cybersecurity, data science, and more.

Class Central Team Jun 22, 2026

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临床医学八年制耳鼻咽喉科学


探索耳鼻咽喉-头颈外科核心知识，涵盖解剖生理、常见疾病诊疗及手术技术，由权威专家主讲，助力临床医学八年制学生夯实专科基础与临床思维。
- XuetangX
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- Free Online Course
分子生物学实验


探索细菌基因敲除与CRISPR基因编辑技术，通过"细菌颜色变变变"和"基因魔剪"两大实验，培养科研思维与自主设计能力。
- XuetangX
- Self-Paced
- Free Online Course
网络攻防技术


Explore network attack and defense techniques focusing on Windows OS security, covering account safety, file encryption, and defense against remote control attacks and trojans.
- XuetangX
- Self-Paced
- Free Online Course
传感器技术与应用


探索传感器技术的基本原理与应用，涵盖温度、力、声音、光电及磁敏传感器，基于STM32平台开展项目式实验，培养综合设计与问题解决能力。
- XuetangX
- Self-Paced
- Free Online Course
电子元器件与应用


掌握电子元器件的工作原理与应用，涵盖IGBT、开关电源设计、充电电路等，培养解决实际电子工程问题的能力。
- XuetangX
- Self-Paced
- Free Online Course
数字IC设计与应用实践


掌握使用华大九天EDA软件进行数字IC设计与仿真，涵盖MOS晶体管、组合/时序逻辑电路、版图设计及多位串行加法器实践项目。
- XuetangX
- Self-Paced
- Free Online Course
智能无线网连技术


掌握蓝牙、Wi-Fi、Zigbee、NB-IoT及LoRa等主流无线通信技术的核心原理与模块实操，快速入门物联网无线通信领域，提升实战技能。
- XuetangX
- Self-Paced
- Free Online Course
形象艺术设计


探索形象艺术设计的核心理论与实践，掌握色彩搭配、服饰造型、化妆发型及仪态塑造，全面提升个人形象与职场竞争力。
- XuetangX
- Self-Paced
- Free Online Course
现代化学与中学化学


Explore the integration of modern chemistry frontiers with middle school teaching, enhancing pedagogical innovation, core competencies, and professional growth for chemistry educators.
- XuetangX
- Self-Paced
- Free Online Course
工程图学IV

掌握工程图学核心知识，涵盖投影原理、几何元素、零件图与装配图的绘制与识读，培养空间想象力与工程设计能力。
- XuetangX
- Self-Paced
- Free Online Course
动物微生态学


探索动物微生态学核心理论，掌握正常微生物与动物内环境的相互关系，学习微生态平衡、失调与调理知识，解决动物及人类健康相关复杂问题。
- XuetangX
- Self-Paced
- Free Online Course
嵌入式linux操作系统应用


Explore embedded Linux application development from scratch, covering Linux basics, shell scripting, process management, driver programming, and AI integration using domestic RK3568/T113 development boards.
- XuetangX
- Self-Paced
- Free Online Course
水族观赏动物遗传育种学


探索水族观赏动物遗传育种的核心理论与前沿技术，涵盖选择育种、基因编辑、多倍体育种等方法，培养解决实际繁育问题的创新能力。
- XuetangX
- Self-Paced
- Free Online Course
耳鼻咽喉头颈外科学护理学课程


掌握耳鼻咽喉头颈外科护理核心知识与技能，结合临床视频、案例与自测题，培养评判性思维，提升临床护理水平。
- XuetangX
- Self-Paced
- Free Online Course
临床思维


Master clinical thinking skills covering symptom recognition, diagnosis, and decision-making for conditions like fever, chest pain, and dyspnea through real case analysis.
- XuetangX
- Self-Paced
- Free Online Course

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