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#include
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long
sbit BEEP=P2^0; //speaker output pin
uchar th0_f; //The upper 8 bits of the value of T0 loaded in t...[Details]
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This paper introduces the learning experience of JJG1027-91 "Measurement Error and Data Processing", JJG13-92 "Metrology Standard Assessment Specification" and 150/TA "Guide to the Expression of Unce...[Details]
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Today I saw that using TFTP, the development board can download programs directly from Ubuntu without having to download through the burning file system. I tried it, but the virtual machine, developm...[Details]
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1. Errors caused by non-axisymmetric flow When the velocity of the fluid in the pipe is axisymmetrically distributed, and in a uniform magnetic field, the magnitude of the electromotive force generat...[Details]
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I have been reading relevant materials for a while and I have written down what I have learned as a reminder. If there are any errors in this article, please point them out. I will be very grateful. ...[Details]
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Introduction
When analyzing materials at remote sites where it is not possible to place a probe into the material, high frequency transceivers provide a viable method for accurately quantifying the...[Details]
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RS232 interface is a communication protocol used for short distance (maximum 30-60 meters), slow speed, point-to-point communication. Schematic diagram of RS232-RS485 three-wire converter :
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Color: A display screen that puts red and green LEDs together as one pixel is called a two-color screen or a color screen; a display screen that puts red, green, and blue LED tubes together as on...[Details]
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0 Introduction
Ultrasonic waves have the advantages of good directionality, concentrated energy, low attenuation during transmission, and strong reflection ability. Ultrasonic sensors can be w...[Details]
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The automobile combination switch is a commonly used switch in automobiles (see Figure 1 for its appearance). It has low beam, high beam, low light, headlight, overtaking, high speed wiper, low spe...[Details]
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Ethernet Tester Introduction Ethernet tester is a cost-effective handheld Ethernet network analyzer that is very much needed by network management and maintenance personnel. It is multi-functiona...[Details]
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All STM32 chips have a successive approximation ADC module, which is widely and frequently used. However, some problems are often encountered during the application process. I will try to summarize i...[Details]
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Microcontrollers can be classified from different aspects: according to the data bus width, they can be divided into 8-bit, 16-bit and 32-bit machines; according to the memory structure, they can be d...[Details]
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Introduction: In recent years, the use of microprocessors to control switching power supplies has continued to develop. There is still much controversy over the advantages of digital power supplies...[Details]
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A shunt DC motor is a common type of DC motor in which the field winding is connected in parallel with the armature winding. In this article, we will discuss in detail the working principle of a sh...[Details]