Basic Linux Practice Multiple Choice Questions – 04

Basic Linux Practice Multiple Choice Questions - 04

16. Question: You are working on a system and want to compile a program from source code. You realize you need some development tools. In which directory do you expect to find these tools? Option 1: /usr/bin Option 2: /opt Option 3: /usr/local/bin Option 4: /usr/include Correct Answer: 3 Explanation: Development tools, such as compilers … Read more

Comprehensive Guide to Linux Shell Scripting

Comprehensive Guide to Linux Shell Scripting

This section shares tutorials on shell scripting programming under Linux. We introduce the content starting from the most basic concepts, allowing beginners to grasp this skill through the tutorials. Each knowledge point is detailed with corresponding code examples. You can access the link below to enter: http://www.mdrsec.com/#/ctoplus_article/e89ae5f7a30c68f5b6d4725feb7a8e1d You can also enter from the official system’s … Read more

What to Do When a Touch Screen Goes Black and Does Not Display? Common Causes and Solutions

What to Do When a Touch Screen Goes Black and Does Not Display? Common Causes and Solutions

Early in the morning, I received a call from a customer saying that the display on their device, which was working fine last night, did not display anything when they turned on the machine this morning. The customer quickly sent me a photo: This display is a Mitsubishi M70. After confirming that the screen was … Read more

C Language Tutorial and Resources for Beginners

C Language Tutorial and Resources for Beginners

Save all links at the end using your mobile phone!! Saving on a computer may cause issues! Hurry up and save to avoid censorship! The C language is a general-purpose, procedural programming language. It was designed and developed by Dennis Ritchie at Bell Labs in 1972 to facilitate the portability and development of the UNIX … Read more

Differences Between Firmware and Software in Embedded Development

Differences Between Firmware and Software in Embedded Development

In embedded system development, “Firmware” and “Software” are two concepts that are closely related yet fundamentally different. They together constitute the operational logic of a device, but they have clear boundaries in terms of hardware dependency, functional positioning, and development models — firmware is the “soul of the hardware,” responsible for bringing the hardware “to … Read more

Elementary Labor Education Practical Activity: 3D Printing Pen Holder Courseware + Teaching Design + Video Materials

Elementary Labor Education Practical Activity: 3D Printing Pen Holder Courseware + Teaching Design + Video Materials

1.Labor Concept: Through the3D printing pen holder practical activity, students will gain a preliminary understanding of 3D printing technology and its principles. 2. Labor Skills: Students will be able to design and create simple works using 3D software and printers based on prompts, cultivating hands-on practical skills. 3. Labor Habits and Qualities: During the group … Read more

Igniting Dreams with Technology: 3D Printing the Future

Igniting Dreams with Technology: 3D Printing the Future

Children’s Hearts Toward the Party Hand in Hand to Safeguard Growth To cultivate the technological innovation capabilities of young people, the Department Store Community’s New Era Civilization Practice Station, in collaboration with the Youth Affairs Social Work Station of the Heping District, has jointly launched the “Igniting Dreams with Technology: 3D Printing the Future” science … Read more

Advanced 3D Printing Techniques: From ‘Printing’ to ‘Printing Well’, Have You Adjusted These Settings Correctly?

Advanced 3D Printing Techniques: From 'Printing' to 'Printing Well', Have You Adjusted These Settings Correctly?

September 16, 2025 1. Introduction: Why do others print the same model like a “work of art”, while yours looks like a “defective product”? Recently, someone complained to me: “I spent 5000 yuan on a resin printer, but the anime figurines I printed either have missing arms and legs or a rough surface, while the … Read more

The Ultimate Play of 3D Printing: From Model to Reality, How to Double the Aesthetic Appeal with Post-Processing?

The Ultimate Play of 3D Printing: From Model to Reality, How to Double the Aesthetic Appeal with Post-Processing?

September18,2025 1. Introduction: Why Can Professional Players’ Prints Be So Realistic? The Secret Lies in Post-Processing! Recently, I saw someone share a comparison image: on the left was their freshly printed FDM dinosaur skeleton model—its surface had obvious layer lines, and there were remnants of support at the joints; on the right was the finished … Read more

Mastering the Dimensions of 3D Printed Holes: 5 Simple Tips

Mastering the Dimensions of 3D Printed Holes: 5 Simple Tips

3D printed holes are almost ubiquitous. Pins, bolts, bearings, linear rods, and many other mechanical components require them. Without them, assembling certain 3D printed parts can turn into a nightmare of chaotic glue and tape rolls. While designing a hole in CAD software may only take a few clicks, mastering the design of 3D printed … Read more