In the field of electronic engineering, debugging (Debug) circuit boards is an indispensable part of the product development process, directly related to whether the product’s functions and performance meet the standards. In the face of complex digital circuit systems, an efficient and organized Debug process is particularly important. So how can we effectively perform its … Read more
Books written by foreigners are usually lively and easy to understand, but unfortunately, most translations are quite stiff. Today, I recommend this introductory book on RF, authored by Carl and J. Weisman. Based on the author’s years of work experience, it uses a humorous and engaging language, with concise and clear sections, focusing on the … Read more
In microcontroller design, to ensure specific functions are realized, many electronic engineers equip delay functions. However, many beginners in electronics do not understand the purpose of these delay functions and may not even know how to write them. This article will list the delay functions for microcontrollers, hoping to assist everyone. Generally speaking, a microcontroller … Read more
Reset Conditions The RST pin must maintain a high level for more than 2 machine cycles. Reset Circuit Figure 80C51 Reset Circuit CPU State After Reset Any microcontroller must go through a reset process before it can operate. What does reset mean? It is similar to the preparation bell we ring before class starts. Once … Read more
Click the above“Mechanical and Electronic Engineering Technology”to follow us This article introduces three experiments: lighting a single LED, flashing a single LED, and running lights using the 51 microcontroller, along with programming in C language and assembly language. 1. Circuit Diagram Used As shown in the figure, the 51 microcontroller connects 8 light-emitting diodes to … Read more
Bidirectional IO Port Output: Complementary Push-Pull In the 51 microcontroller, the P0 port operates in standard IO mode as a quasi-bidirectional IO port. When in the second functional state, it becomes a standard bidirectional IO port. Due to the output requirements of bidirectional IO ports needing to output high and low levels, complementary push-pull circuits … Read more
In the design and manufacturing process of electronic products, the PCB acts as a bridge connecting various electronic components. Its quality directly affects the overall performance and reliability of the product. Therefore, engineers must conduct strict inspections on the PCB to ensure that the product is flawless and can achieve optimal efficiency and performance. So, … Read more
☞ This is the 17006th article published by Metal Processing (mw1950pub). Editor’s Note The production of PCB is very complex. Taking a four-layer printed circuit board as an example, the manufacturing process mainly includes PCB layout, core board production, inner layer PCB layout transfer, core board drilling and inspection, lamination, drilling, copper chemical deposition on … Read more
PCB (Printed Circuit Board), also known as printed circuit board in Chinese, is an important electronic component and the support for electronic components. Since it is made using electronic printing technology, it is called a “printed” circuit board. Before the advent of PCBs, circuits were composed of point-to-point wiring. This method had low reliability because … Read more
When hardware engineers first encounter multi-layer PCBs, it can be quite overwhelming. With layers often reaching ten, the circuits resemble a spider’s web. Today, I created several internal structure diagrams of multi-layer PCBs, using 3D graphics to showcase various layered structures within the PCB. 01 The Core of High-Density Interconnection Boards (HDI) Lies in the … Read more