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Since high school, the meal cards used in our school are contact IC cards. There are also many IC card phones on campus. After entering college, the school uses a campus card, which is a contactless r...[Details]

Apple announced at the 2020 Worldwide Developers Conference (WWDC) that its Mac product line will introduce the first-generation "Apple Silicon" M1 processor developed in-house. The main feature of t...[Details]

The circuit shown is a single-tuned loop intermediate frequency amplifier. The DC operating point of transistor 3DG6C is V CE = 8V, IE = 2 mA; the operating frequency f 0 = 10.7 MHz; the tuning loop ...[Details]

    With the development of liquid crystal display technology and the improvement of the intelligence of instruments, people's requirements for information display methods are also constantly increas...[Details]

Jinhua Chuangjie Electronics has been a supplier of automotive grade crystal oscillators for many years, and during this time we have found that our customers are sometimes confused about the AEC-Q...[Details]

0 Introduction The pulse tester is an electronic instrument used to measure the number of times a person's pulse beats. It is also the main component of the electrocardiogram. Therefore, it plays an...[Details]

Title: Use nested conditional operators to complete this question: students with grades = 90 are represented by A, those with grades between 60-89 are represented by B, and 　　　those with grades belo...[Details]

1. Introduction to GPIO port The STC15W408AS microcontroller has 14 I/O ports. All its I/O ports can be configured into 4 types by software. The 4 types are: quasi-bidirectional port/weak pull-up (st...[Details]

With the rapid development of the Internet, Web applications are becoming more and more widespread. Due to the openness and independent platform characteristics of Web technology, the design and ma...[Details]

On the morning of December 2, 2023, the Shenzhen base, one of the three newest bases deployed by Haichen Energy Storage in China, was officially completed. Guo Ziping, Secretary of the Party Leader...[Details]

The construction of an audio system or audio environment includes two aspects, namely recording and acquisition (recording) and sound reinforcement and playback (playing back). The following is an ...[Details]

1 Brief Introduction and Flash Structure of C8051Fxxx MCU 　　The C8051Fxxx series of devices is a high-speed MCU series launched by Silicon Labs. This MCU is a fully integrated mixed-signal system-on...[Details]

According to new information from LeaksApplePro, we won’t see the launch of AirPods Pro 2 anytime soon, as the earliest release schedule is said to be in the fourth quarter of 2021. He also mentioned...[Details]

We are all familiar with motors, which can be seen everywhere in our lives. In daily production and life, electric motors are basically involved. The power inverter is a control device that can cha...[Details]

Background GL Logger (hereinafter referred to as GL) is a special automotive data recorder, which is widely used in road tests or bench tests. This series of recorders supports data recording o...[Details]