计算机实习日记，200字，20天

Day 1: Today is my first day of computer internship. I am excited to learn and gain more experience. My mentor introduced me to the company’s software and hardware tools.

Day 2: I learned the basics of programming languages like C++ and Python. My mentor guided me through some coding exercises to make sure I understood the concepts.

Day 3: Today, I was introduced to database management systems. I learned how to use SQL to query, update and manage data in a relational database.

Day 4: I spent the day working on a project using Java programming language. I learned how to implement object-oriented programming concepts and how to use Java libraries.

Day 5: I learned about web development and how to create a simple website using HTML and CSS. I also learned about responsive design and how to make a website compatible with different devices.

Day 6-10: I spent these days working on a group project. We developed a simple mobile application using Android Studio. I learned how to design user interfaces and how to integrate different functionalities into the app.

Day 11-15: I worked on a project that involved data analysis using Python. I learned how to use libraries like NumPy, Pandas and Matplotlib to analyze and visualize data.

Day 16-18: I worked on a cybersecurity project. I learned about different types of attacks and how to prevent them. I also learned how to use penetration testing tools.

Day 19: I spent the day improving my coding skills by practicing coding challenges on different online platforms.

Day 20: Today is my last day of internship. I am grateful for the opportunity to learn and gain experience. I am now more confident in my coding skills and ready to take on more challenging projects.