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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]

Since AC mains power may experience power outages, voltage sags and surges, continuous undervoltage and overvoltage, and frequency fluctuations during supply, these factors will affect the continuous ...[Details]

There are many types and styles of digital voltmeters in design and development. Traditional digital voltmeters have their own characteristics. They are suitable for manual measurement on site. Tra...[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]

With the development and application of liquid crystal display technology, more and more developers want to use liquid crystal screens to display Chinese characters in the instruments and equipment th...[Details]

1. Introduction According to the definition of the International Electrotechnical Commission (IEC) and the American Instrument Society (ISA), fieldbus is a digital, two-way transmission, multi...[Details]

1. Introduction PROFIBUS is an international, open asynchronous serial communication standard, which is widely used in manufacturing automation and process automation, buildings, transportatio...[Details]

In order to reduce the proportion of data transmission time in the entire system processing time index, the data transmission rate should be no less than E1 (2.048Mb/s), and the communication...[Details]

In the "mistress war", Zhou Hongyi constantly questioned Lei Jun, firing at Lei Jun on issues such as the cost, profit, configuration, and marketing methods of Xiaomi mobile phones. The "m...[Details]

8051 is the representative of traditional CISC architecture microcontrollers , while PIC is the masterpiece of modern RISC architecture microcontrollers. Although the RISC architecture is recogn...[Details]

On June 29, according to Reuters, Finland's Helsinki Daily published an article today saying that Nokia Chairman Risto Siilasmaa still expressed confidence in the management after the company announce...[Details]

Currently, more and more home appliances are migrating from low-speed dial-up Internet access to broadband Internet access or Internet Protocol Television (IPTV), and IPTV is expected to develop ra...[Details]

For our previous application testbed, we used a controller board developed in-house, but this board required a separate compatible toolchain to download the applications. In addition, the user interfa...[Details]

Low power mode Sleep, enter low power mode by executing a sleep instruction. If enabled, MDT will be cleared to 0, but still keep running. TO (STUATUS ) bit is set to 1, PD bit (STUATUS ) is cleared t...[Details]

This fish tank automatic thermostat can be used by fish aquarium enthusiasts to feed tropical fish. The circuit is simple and the effect is good. Working principle The circuit is show...[Details]