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COB light sources were once all the rage, and their superior heat dissipation performance and low-cost manufacturing were sought after by many packaging companies. However, when everyone turned to...[Details]
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O Introduction
GPS (Global Positioning System) is widely used in the fields of positioning, navigation, distance measurement, timing remote sensing, etc. with its high precision, all-weather an...[Details]
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On the morning of the 25th, Amazfit, a smartwatch brand under Huami Technology, officially released a new generation of outdoor smartwatch product T-Rex 2. The new product inherits the tough and cool...[Details]
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This article introduces the use of low-cost, high-efficiency boost power management chip CP212X series products to achieve multiple positive and negative power outputs. Combined with the power supp...[Details]
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Yesterday, Xiaomi Group Vice President, China President, and Redmi Brand General Manager began to prepare for the promotion of the new generation of Redmi flagship series K40 series. For examp...[Details]
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1. Overview
In order to curb and combat crime and reduce financial risks, banks need to conduct effective and reliable monitoring of important locations and business premises, and to recor...[Details]
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Apple iPhone 12 and iPhone 12 Pro were officially released on October 14. At present, the disassembly of Io Technology shows that Apple iPhone 12 and iPhone 12 Pro use the same model and capacity of ...[Details]
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/************MCU teaching experiment board******************/
/*74HC244 key test program*/
#include reg52.h ac
#include STC_Delay.h
#include stdio.h
#include stdlib.h
#include intrins.h...[Details]
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At present, there are three main ways to generate SPWM signals: 1) Use analog circuits such as comparators and oscillators to generate triangular waves and square waves for comparison to generate SPW...[Details]
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1 Principle of frequency synthesis technology
There are many methods of frequency synthesis. The most commonly used frequency synthesis technologies are direct frequency synthesis, direc...[Details]
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Recently, Alibaba Cloud disclosed that in 2019, Alibaba Cloud achieved operating income of 40 billion yuan, a year-on-year increase of 62%. In 6 years, Alibaba Cloud has grown 31 times. The latest va...[Details]
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Features: This design uses STC89C51/52 (compatible with AT89C51/52, AT89S51/52, please leave a message to specify the microcontroller) as the main controller The main function: The microcontrolle...[Details]
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Use the program to practice data transfer instructions
Data transfer instructions between the accumulator A of the microcontroller and the external RAM
MOVX A,@Ri
MOVX@Ri,A
...[Details]
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The balance is a more precise measuring tool, and its structure is complex, and its use is cumbersome and difficult to master. Grasping the following precautions will help you understand and maste...[Details]
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IBM scientists have achieved "cross-chip" quantum entanglement - successfully entangled two "Eagle" quantum chips. Each quantum chip has 127 quantum bits, and the two chips together completed a com...[Details]
Microcontroller MCU
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