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tag:code optimization, division, Newton iteration, subtraction instead of division, division optimization Note: Many data in the article may have different results in different CPUs or different syste...
Can the HTS221 humidity sensor also measure light? I tried it myself and it is true.
Using a strong light mobile phone to shine on the humidity sensor can reduce the humidity value by about 3%.Testing...
I recently used 1000 STM8S103F3 chips, with an operating voltage of 5V, and programmed them through SWIM using STLink. Nearly 100 of them had problems, mainly because they automatically reset repeated...
Looking to buy a 30V5A DC linear regulated power supply. :), if anyone wants to change equipment, you can sell the unused one and use it yourself, and don't care about the quality....
introduction
With the continuous optimization of surface mount technology (SMT) and the rapid development of chip component manufacturing technology, the application of chip mounters in the el...[Details]
1. Introduction
With the increasing popularity of fully automatic washing machines, consumers have higher and higher requirements for their environmenta...[Details]
When programming in C and assembly, there are interface issues between variables and functions in C and assembly.
Variables defined in a C program are put into the .bss area after being compile...[Details]
Example of multitasking and resource reuse of programs
There is an electromechanical device with two buttons that control two different parts of the device.
Now the requirement is:
wh...[Details]
1 Introduction
In order to realize intelligent electronic counting and frequency measurement and realize a wide-range, high-precision frequency meter, an effective method is to use a single-chip m...[Details]
In the 8051 system, the data pointer DPTR is a special 16-bit register used to address the 64 KB XDATA or CODE space. It is usually used as a 16-bit pointer to a constant table. Dual data pointer...[Details]
1 Introduction
Microwaves use their unique functions to develop new technologies in the application field, including microwave communication, microwave measurement, microwave heating and other...[Details]
1 Working Principle
This system makes full use of the control and computing capabilities of the 89C51 single-chip microcomputer and adopts the MCS-51 assembly language to design a microwave pu...[Details]
The MCS-51 microcontroller has multiple interrupt sources. Taking 8051 as an example, there are 5 interrupt sources, two external interrupts, two timing interrupts and one serial interrupt. In this...[Details]
During this period, many friends have been working on LED displays and have asked me many questions. I always fail to find the key points when answering them one by one. Here I summarize some of my...[Details]
1. MC68360 chip introduction
MC68360 is a highly integrated 32-bit general-purpose communication controller, widely used in communication equipment. Its main features are as follows:
The e...[Details]
1 Introduction
The measurement and monitoring of electrical parameters are an important part of the power system. Starting from the engineering practice of the test system, this paper completes the...[Details]
Introduction
The CAN bus enables users to build a stable and efficient fieldbus network with its low development and maintenance cost, high bus utilization, long transmission distance (up t...[Details]
1 Introduction
In the 21st century, the development of computers has entered a stage full of opportunities - the post-PC era. After the PC, various forms of digital products have begun to becom...[Details]
0 Introduction
Natural water usually contains calcium and magnesium ions, commonly known as hard water. In boiler water, calcium and magnesium ions need to be removed to form soft water to prevent b...[Details]
MCU
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