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Abstract: Access control is an information security technology that was created to improve efficiency, enhance competitiveness, and ensure the security of information management systems. The task-b...[Details]
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In the delay function, an error occurred when judging the end of a count, resulting in an abnormal delay duration. First, let's explain the idea of function design. The main purpose is to d...[Details]
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The principle of optical mouse
The optical mouse integrates modern high-resolution imaging technology and digital image processing technology. It is a major invention in mouse technolo...[Details]
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I didn’t expect that a small GPIO operation function would take me seven blog posts. This should be the last one. 1. The GPIO operation function of s3c6410 mainly involves three files, as shown bel...[Details]
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The embedded controller is designed with Atmega128 single-chip microcomputer. The analog input channel uses Atmega128 on-chip A/D converter, the output uses AD421 D/A converter, and the digital ...[Details]
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introduction
SIP (Session Initiation Protocol) is a text-based protocol similar to HTTP and SMTP. SIP is independent of the transport layer protocol and other session control protocols. It can...[Details]
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1. The difference between digital signal level and analog signal level
The carrier modulation of analog TV is VSB, that is, residual sideband modulation. The image content is transmitted through...[Details]
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C18 is a compiler environment that MCHP developed a long time ago for high-end PIC18 chips. Maybe it is due to the user coverage, but I personally feel that it is much more difficult to use than the ...[Details]
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The general PCB design process is as follows: preliminary preparation - PCB structure design - PCB layout - wiring - wiring optimization and silk screen - network and DRC inspection and structure i...[Details]
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The construction of charging infrastructure is the key construction direction of "new infrastructure". The areas covered by new infrastructure mainly include the following seven items: 5G base statio...[Details]
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An oscilloscope is an electronic measuring instrument with a wide range of uses, and is also an indispensable instrument in equipment maintenance. With it, technicians can quickly and accurately find...[Details]
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The reason why I wrote this blog is that I recently worked on a project that required the use of the low-power mode of the microcontroller. It was my first time using stm8, and I read a lot of inform...[Details]
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Economical board-to-line connection solution Single-row cable connector system
More economical, space-saving but still high-performance board-to-wire connection solutions required by many mode...[Details]
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introduction
Currently, most PLC manufacturers only launch redundant PLCs in large PLC systems, but not in small PLC systems, and large redundant PLC systems are expensive.
As the r...[Details]
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The self-discharge of electric vehicle batteries refers to the gradual loss of charge inside the battery when it is not in use, thereby reducing the battery's available energy. This is an important...[Details]
PCB Design
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