The Essence of Programming – LCD: Logic/Control/Data

The Essence of Programming - LCD: Logic/Control/Data

This article is a reading note from “Listening to the Wind with the Left Ear: A Legendary Programmer’s Leveling Guide.” The essence of programming includes Logic, Control, and Data. The programming paradigms and design methods we use mainly revolve around these three aspects. Logic is the essence of the problem, which implements how to solve … Read more

How to Use a Multimeter to Measure and Distinguish Between Voltage, Neutral, and Live Wires

How to Use a Multimeter to Measure and Distinguish Between Voltage, Neutral, and Live Wires

Source: Electrician Home Electrical Technicians Technical Club:200037175 Electrical Personnel Procurement Alliance Group:436576602 Application Format:City Name – Company Name (Electrical Engineer Job Title) Before starting the second part of voltage testing, let’s insert a small section A: How to choose the multimeter probe socket under different ranges First, let’s take a look at the sockets available … Read more

Cloud Desktop Development and Security: Building an Efficient and Reliable Virtual Office Environment

Cloud Desktop Development and Security: Building an Efficient and Reliable Virtual Office Environment

Abstract: The cloud desktop, as an emerging virtualization technology, is gradually changing traditional office models. By deploying the desktop environment in the cloud, it provides users with a flexible, efficient, and convenient working experience. However, with the widespread application of cloud desktops, their security faces numerous challenges. This article will explore the development process of … Read more

Learning BLE from Scratch: Controlling Devices

Learning BLE from Scratch: Controlling Devices

Previously, we introduced the process of discovering services and characteristics. Today, let’s take a look at what happens next.In the software, we click to control the light to turn it on and off. The data sent by the host is as follows:Captured dataOperation codeOperation code 0x12: write request.Write requestWriting the value 0x0001 to the attribute … Read more

Multimeter User Manual: A Beginner’s Guide

Multimeter User Manual: A Beginner's Guide

The multimeter, also known as a multifunction meter, three-in-one meter, or universal meter, is a versatile and multi-range measuring instrument. Generally, a multimeter can measure direct current, direct voltage, alternating voltage, resistance, and audio levels. Some models can also measure alternating current, capacitance, inductance, and certain parameters of semiconductors (such as β). 1. Structure of … Read more

Introduction to PLC Programming: From Simple to Complex

Introduction to PLC Programming: From Simple to Complex

PLC (Programmable Logic Controller) programming is one of the core skills in the field of industrial automation. For beginners, mastering the basic logic of programming and gradually accumulating experience is key to improving programming skills. This article will start with the simplest momentary control and gradually introduce basic programs such as self-locking and interlocking, helping … Read more

Understanding PLC and Inverter Communication Wiring

Understanding PLC and Inverter Communication Wiring

The relationship between PLC and inverter is one of inclusion, where both can execute specific commands to control electric motors. The PLC is a programmable hardware for executing programs, while the inverter is one of the devices it can control. However, the PLC’s scope is broader than that of the inverter, enabling it to control … Read more

How to Use a Pointer Multimeter for AC and DC Voltage Measurement

How to Use a Pointer Multimeter for AC and DC Voltage Measurement

Click the blue text above to follow us Hello Dear students Our Dou Classroom is back ~ Welcome to this episode So this is how to measure AC and DC voltage with a pointer multimeter! If you can’t watch the video for now, don’t worry! The complete wiring connection steps are right below Want to … Read more

Using a Pointer Multimeter

Using a Pointer Multimeter

A multimeter, also known as a multi-tester or volt/ohm meter, is a multifunctional, multi-range measuring instrument. It is the most basic tool in the field of electronic testing and is widely used; it is a measuring tool that personnel in the electronics industry must master. Multimeters are divided into pointer and digital types. A typical … Read more

Basic Electrical Knowledge: How to Use a Multimeter

Basic Electrical Knowledge: How to Use a Multimeter

A multimeter is a common measuring instrument for voltage, resistance, capacitance, temperature, and more. The digital multimeter is easy to operate, rich in functions, and the display screen directly shows the required measurements for DC voltage, AC voltage, DC current, AC current, resistance, capacitance, etc. Today, we will take the clamp multimeter as an example … Read more