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What is the PLC scan cycle?
1. PLC scan cycle refers to the time required for PLC to execute from the first line of the main program to the last line and then return to the first line.
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8051 Pin Definition
Now let's talk about the pins
The 40 pins of a microcontroller can be roughly divided into four categories: power, clock, control, and I/O pins...[Details]
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In the previous two issues of "Juchuang Popular Science", the editor of Juchuang brought you an instrument: LD-5 microcomputer dust detector. Through detailed graphic and text introduction, everyone ...[Details]
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What is an interrupt routine? A vivid metaphor is like you are reading my article now, and suddenly your friend asks you to go roast sweet potatoes together. At this time, you interrupt reading th...[Details]
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Clock cycle
The clock cycle is also called the oscillation cycle, which is defined as the inverse of the clock pulse (the clock cycle is the inverse of the crystal oscillator connected to the m...[Details]
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Functions of PLC control cabinet
The PLC integrated control cabinet has protection functions such as overload, short circuit, and phase loss protection. It has a compact structure, stable oper...[Details]
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1. Principle of key operation 1. In stm32f103rc, there are three buttons (excluding reset), namely key0 (PC5), key1 (PA15), wkup (PA0). When key0 and key1 are pressed, the corresponding io port out...[Details]
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A/D Converter A/D converter, also known as analog/digital converter, as the name suggests, digitizes analog signals. Since the actual processing objects of the system are often some analog quanti...[Details]
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There are two initialization methods for debugging bare boards. One is to use the burned uboot for initialization, and the other is to use JLink+GDBServer for initialization. The code refers to the...[Details]
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Environment: Ubuntu 16.04 64bit 1. Install JDK Download: jdk-8u221-linux-x64.tar tar -zxvf filename Unzip and move it to the /opt/ directory, and change the directory name to jdk. Add environment v...[Details]
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Countries around the world have clearly defined policies to eliminate or restrict the use of incandescent lamps, and incandescent lamps will gradually exit the stage of history; and the energy-saving...[Details]
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On August 13, according to the Securities Times, Xinwangda's wholly-owned subsidiary Xinwangda Electric Vehicle Battery Co., Ltd. signed a "Project Investment Agreement" with the Nanchang Economic ...[Details]
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The two major industrial policies of "strengthening the foundation of components" and "improving the efficiency of motors" pave the way for innovative development of the Internet of Everything and in...[Details]
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In the process, we often encounter the measurement of fluids with relatively high viscosity, that is, fluids with relatively high Reynolds numbers on site. In this case, ordinary flow meters cannot me...[Details]
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It is a common problem that the voltage is too low when the motor starts, which will cause difficulty in starting the motor, reduce efficiency and even damage the motor. In order to solve this prob...[Details]
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