Author: Potato Scholar Source: One Mouth Linux 1. Operating Systems Microsoft Windows : Assembly -> C -> C++Note: In the early development of the smartphone operating system (Windows Mobile), there was consideration to use some programs written in C#, such as the soft keyboard, but the programs were too slow to integrate with other modules, … Read more
SMT Top Networking Circle A professional circle for sharing networking resources and achieving career advancement. In simple terms, the PCBA process is a combination of the SMT processing and DIP processing. Depending on the requirements of different production technologies, it can be divided into single-sided SMT assembly processes, single-sided DIP insertion processes, single-sided mixed assembly … Read more
Simply put, what is PCB? PCB = printed circuit board; the Chinese name is 印制电路板, also known as printed circuit board, is an important electronic component, serving as the support for electronic components and the carrier for electrical connections between electronic components. Because it is made using electronic printing techniques, it is called a ‘printed’ … Read more
This article is reprinted from the Jishu Community Jishu Column: Open Source Software on Arm Infrastructure Author：yang 1 Introduction This article aims to introduce Arm NEON technology, hoping that NEON beginners can quickly get started with NEON programming after reading this article. This article will also provide readers with a document index containing more detailed … Read more
Click the blue text above to follow us 01. Internal Data Transfer Instructions of the Processor >>> The most common operation performed by the processor is transferring data back and forth within the processor. Common operations include: ①. Transferring data from one register to another. ②. Transferring data from a register to special registers like … Read more
1. Accessory Information 1. USB connection cable — connects the main board and the touch screen PCBA board 2. Touch screen PCBA board — the data processing center for the touch screen 3. Touch screen data connection cable — connects the front touch screen (glass) to the PCBA board 4. Ground wire — grounds the … Read more
When printed circuit board assemblies (PCBA) return with corrosion, analysts need to find the source of contamination that caused the corrosion in order to eliminate it. Contaminants can come from various sources, such as manufacturing operations, packaging, installation, and the environment. There are many methods that can be used to determine the composition of contaminants. … Read more
Course 4: Detailed Explanation and Practical Application of ARMv8 Assembly Pseudo Instructions Pseudo instructions (Directives) are auxiliary instructions provided by the assembler to control code generation, data allocation, segment structure, etc.,which do not directly translate into machine code. Below is a classification and example analysis of commonly used pseudo instructions in ARMv8 assembly: 1. Segment … Read more
Course 2: Stage 1 – Basic Preparation (Week 2) Topic: Detailed Explanation of ARMv8 Registers and Instruction Set, Bare-Metal Programming Practice 2.1 In-Depth Analysis of Registers Classification of ARMv8 Registers: General Purpose Registers (31): <span>X0</span>: Function Argument 1 / Return Value. <span>X1-X7</span>: Function Arguments 2-8. <span>X8</span>: System Call Number. <span>X29</span>: Frame Pointer (FP). <span>X30</span>: Link … Read more
Course 5: Phase 2 – Core Instructions and Programming Topic: Memory Operations and Complex Data Structures, Bare-Metal Programming Practice 5.1 Advanced Memory Operations Multi-Byte Memory Operations <span>LDP</span>/<span>STP</span>: Load/Store two registers at once (supports 64-bit and 32-bit modes). stp x0, x1, [sp, #-16]! // Push x0 and x1 onto the stack, SP -= 16 ldp x2, … Read more