CNX440X044218

1. Experimental tasks As shown in Figure 4.14.2, use the parallel port P1 of AT89S51 to connect to a 4×4 matrix keyboard, use P1.0-P1.3 as the input line, and use P1.4-P1.7 as the output line; it ...[Details]

On December 6-7, the "Inverter Digital Technology Transformation Forum" hosted by the China Photovoltaic Industry Association was held in Beijing. The forum mainly discussed the development directi...[Details]

The card reader system designed in this paper uses PICl6F7x microcontroller as the main control chip, and uses MIFARE S50 cards. The card reader and the card communicate at a rate of 106kbps, and at t...[Details]

The proposed Pioneer-Burdekin project in far north Queensland would provide 5GW of capacity and 24-hour storage, bringing flexibility and security to Australia’s national grid and m...[Details]

1. Grounding Problem The grounding requirements for the PLC system are relatively strict. It is best to have an independent dedicated grounding system. Also, attention should be paid to the re...[Details]

Last week, Apple officially pushed the official version of iOS 13 to the public. Recently, foreign media 9to5mac brought a summary of solutions to common update failure problems. Delete and download ...[Details]

★ Periscope cameras reveal the dividend chasing war of first-tier manufacturers At the beginning of the release of Huawei P30 pro, it has attracted great attention from all walks of life due to its...[Details]

Complex buildings also originate from simple structures. Now let’s try to start with a simple flashing light circuit. The first thing you need to prepare is the tools. If you are not fam...[Details]

　　Overview 　　Temperature measurement is required in many places. When designing a temperature telemetry system, it is usually necessary to use a battery-powered, extremely low-power module. There a...[Details]

Stopping the use of resin packaging can completely eliminate the deterioration factor, because the light generated by the LED is reflected in the resin packaging. If a resin reflector is used to chan...[Details]

Recently, Meta launched its Meta Llama 3 open source large models with 8 billion and 70 billion parameters. The model introduces new features such as improved reasoning and more model sizes, an...[Details]

Common features of Timer_B and Timer_A 1 4 working modes 2 with optional, configurable counter input clock source 3. Multiple independent configurable capture/compare modules ...[Details]

　　The structure of the magnetic flap level gauge is simple, mainly composed of a float, a magnetic float, a flap, a display panel, a display panel end cover, a connecting flange, a drain valve, a ven...[Details]

Modern electronic devices, especially portable communication devices, mostly use integrated voltage regulators as their power source. It integrates various components (resistors, capacitors, diodes...[Details]

Recently, at a special series of activities focusing on the future of Shanghai's smart manufacturing and win-win industries, guided by the Shanghai Municipal Economic and Information Commission, Yang ...[Details]