This work is an original creation based on the author’s personal work experience and independent understanding. All content is the result of the author’s intellectual labor. Any form of reproduction, distribution, publication, adaptation, or commercial use without explicit written authorization from the author is considered an infringement and will be pursued legally. This is a … Read more
1. Report Title and Basic Information Title: Clearly labeled as an Embedded Software Testing Report (e.g., “XXX Embedded System Testing Report”). Version Information: Software version under test, hardware platform model, testing tool version. Author: Test lead, engineers involved in testing. Date: Start and end dates of testing. Reviewer: Personnel reviewing the report (e.g., project manager … Read more
1. Introduction to PCB Materials(1) Concept, Function, and Background of Printed Circuit Boards1. The English term for printed circuit board: Printed Circuit Board2. The abbreviation for printed circuit board: PCB3. The main functions of printed circuit boards: to support circuit components and interconnect circuit components, namely the two main roles of support and interconnection.4. PCBs … Read more
1. Abstract The drilling process is one of the most important components of the entire printed circuit board (PCB). Parameters such as hole position accuracy, hole diameter tolerance, and hole wall roughness directly affect the quality of the PCB and the reliability of product performance. Therefore, strict control of relevant quality items is required during … Read more
