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According to the "ARM-thumb Procedure Call Standard":
r0-r3 are used as parameters passed into functions and as return values from functions. Between subroutine calls, r0-r3 can be used for any pu...[Details]
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0 Introduction
The gas source heat pump water heater uses clean electric energy and air energy (solar energy). Compared with traditional water heaters, it has three characteristics: energy saving, s...[Details]
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1. Press "Sweep Setup" and set the number of points to 5000 points; set "power" to -30dBm (as required) 2. Press "Start" and "Stop" respectively to set the start and end frequencies. TIA：1MHz ~ 1...[Details]
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Three-state gate: Three-state gate buffer: 51 MCU P0 port input buffer
Output drive of P0 port: push-pull structure composed of two MOS tubes
When P0 port is used as IO line input state: ① read...[Details]
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Some engineers think that the physical examination of the oscilloscope is a waste of time and money. Some engineers even did not realize the need to check the oscilloscope after using it for 3 years,...[Details]
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OFweek Cup · OFweek 2023 China
Robot
Industry Annual Selection (abbreviated as OFweek Robot Awards 2023) is jointly organized by OFweek, China's high-tech industry portal, and its authorita...[Details]
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14. Music Playback
//This program has been debugged on the hardware.
//The MCU crystal oscillator of this program adopts 11.0592M
#include reg51.h
sbit speaker=P1^2;
unsigned char t...[Details]
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You can declare and use F-type PLC data types (UDT) just like standard PLC data types (UDT). You can use F-type PLC data types (UDT) in the safety program as well as in the standard user program.
...[Details]
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1.1 ARM serial port output function uart_printf It would be very convenient if ARM could use the printf function format that comes with the C function library, but the default printf is located at ...[Details]
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Things like cyborgs and bionics seem to be something we only heard about in science fiction novels before, but with the continuous advancement of technology and the never-ending exploration of mankin...[Details]
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Working principle of buffer starter
A buffer starter is an electrical device that gradually increases the rated motor current to mitigate the impact current and noise during the motor starting...[Details]
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CBB capacitors are polypropylene capacitors, and their main features include small size, large capacity, high reliability and strong self-healing properties. CBB capacitors have slightly poor stabili...[Details]
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0 Preface
Nowadays, in school dormitories, accidents such as theft of students' valuables and fires caused by students' negligence often occur. These are "big problems" that have always trouble...[Details]
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With the official release of iOS 14, widgets that can be added to the home screen have become a highlight of the new system. As more and more applications that support widgets are listed on the App S...[Details]
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Currently, battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs) operate at 800V battery voltage, exceeding the conventional 400V range. The adoption of 800V batteries is in...[Details]
Power technology
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