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In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer 87LPC764 , and wa...[Details]

When choosing a laptop battery, you should consider several factors, such as power, appearance, and quality. Regarding power, we often see that a manufacturer uses values ​​such as the number ...[Details]

Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]

Aromatic gases are widely present in food, medicine, cosmetics and various daily chemical products, such as snacks, liquor, spices, Chinese herbal medicines, plasters, perfumes, soaps, shampoos, et...[Details]

Abstract: Aiming at the needs of coal-rock acoustic emission signal monitoring system, a data acquisition circuit with 24-bit resolution and 16-channel synchronous data acquisition function is desi...[Details]

0 Introduction Ultrasonic waves are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]

Temperature compensated quartz crystal oscillator (TCXO) is widely used as a high-precision frequency source in communication systems, radar navigation systems, precision measurement and control sy...[Details]

0 Introduction In order to improve the automation control of shortwave transmitters, so that they can automatically process from far to near, the technicians here use the ICS system to complete the ...[Details]

In recent years, with the increasing maturity of LED technology, LED light sources have been increasingly widely used due to their advantages of using low-voltage power supply, low energy consumpti...[Details]

Measurement compatibility It is very important to ensure the compatibility between the pressure sensor and its actual application. Before making a pressure sensor selection, the fo...[Details]

When developing electronic products with processors, how to improve anti-interference ability and electromagnetic compatibility? 1. The following systems should pay special attention to anti-...[Details]

1. Project Introduction Beijing Benz-Daimler Chrysler Co., Ltd. is a joint venture between Beijing BAIC Group and Benz-Daimler Chrysler. In October 2005, it started to build a new automobile ...[Details]

Stepper motors have been widely used in automatic or semi-automatic equipment such as CNC machine tools, medical equipment, and instruments. The usual way to control stepper motors with computers i...[Details]

As the automobile consumer market heats up, the safety performance of automobiles has attracted more attention from consumers. When driving at high speed, tire failure is the most worrying and diff...[Details]

1. Introduction With the continuous development of modern urban construction, infrastructure and real estate are becoming increasingly prosperous, and the quality requirements for construction ...[Details]