PCB Schematic Component Library Creation Creating a PCB schematic component library requires systematic steps and detailed operations. Below is a detailed guide: 1.Determine Requirements and Preparation Component Information Collection: Obtain the component’s datasheet, confirm pin functions, package types (such as DIP, SMD), electrical parameters (voltage, current), etc. Tool Selection: Choose EDA tools based on requirements, … Read more
liwen01 2023.06.04 Introduction (1) Conventional Devices (1) Patent Protection (2) Code Encryption (3) Authorization Verification (4) Continuous Updates and Improvements (2) Embedded Devices (1) Polish Key Chip Logos (2) Disable Debug Serial Ports (3) Set Flash Read Protection (4) Encrypt and Obfuscate Key Information (3) Junzheng T-Series Program Cracking (1) Locate the Root File System … Read more
Overview of Embedded Systems An embedded system is a dedicated computer system that is application-centric and based on computer technology, capable of adapting to various applications, integrating configurable and customizable hardware and software.Characteristics of Embedded Systems1. Strong specificity: Software and hardware are closely integrated.2. Strong real-time performance: Requires timely responses within a specified time frame.3. … Read more
When upgrading OpenWrt using sysupgrade, only the header image of the firmware is checked for validity, and the integrity of the firmware is not verified. Therefore, if the firmware has a valid header but other parts are corrupted or modified, it poses a risk, and upgrading could lead to bricking the device. To verify the … Read more
Table of Contents: Introduction I. Conventional Devices 1. Patent Protection 2. Code Encryption 3. Authorization Verification 4. Continuous Updates and Improvements II. Embedded Devices 1. Polishing Key Chip Logos 2. Disabling Debug Serial Ports 3. Flash Read Protection Settings 4. Encrypting and Obfuscating Key Information III. Cracking the Junzheng T Series Program 1. Locating the … Read more