Due to work needs, I am now preparing to learn about radio frequency, but I am too tight on money, so I want to buy some second-hand materials to learn. Now I am preparing to collect a book [size=6][c...
Rather than a comparison between GPRS and NB-IoT, it is better to say that it is a comparison between traditional networks and emerging networks. Let's focus on the advantages of GPRS and NB-IoT in th...
[i=s]This post was last edited by youki12345 on 2019-1-13 14:08[/i] In short, it is the same network disk as Baidu Sync Disk. I tried it and it is quite useful. [align=left][b]1[/b][b], Introduction[/...
Abstract—Theor y is presented which 1) derives the circuit impedancerequirements to match the nonlinearity of the varactor reactance-versnsvoltagecnrve to the tangent 0 cnrve to obtain 180° linear pha...
1. Purpose Since the number of times the STM32 FLASH can be erased and written is limited, in order to protect our FLASH and extend the use time of the MCU, we can debug on the SRAM. SRAM is a ...[Details]
China Energy Storage Network:
At the Boao Forum, Zhu Min, the current dean of the National Institute of Finance at Tsinghua University, said: "When talking about blockchain, we must first sep...[Details]
From the functional classification, it can be divided into: 1. Active control ADAS: ACC/AEB/LKS, etc. 2. Warning ADAS: FCW/LDW/PCW, etc. 3. Other auxiliary ADAS: BSD/ADB/panora...[Details]
China Energy Storage Network News:
"As the world's first third-generation blockchain, Anda Chain, which has China's independent intellectual property rights, will be launched globally in the ...[Details]
According to the description provided in the official manual of ST, it is not difficult to see that the ADC analog watchdog is actually that the user can set an upper and lower limit of the AD value...[Details]
Independent watchdog (IWDG) and low power mode are often used in STM32 development. The watchdog is to detect and solve faults caused by software errors, and the low power mode is to enter sleep mode...[Details]
Google may have foreseen the spread of artificial intelligence (
AI
) technology across apps, devices, and services, such as recognizing friends' faces in photos and giving smart speakers h...[Details]
A crystal oscillator can be electrically equivalent to a two-terminal network consisting of a capacitor and a resistor in parallel and a capacitor in series. In electrical engineering, this network h...[Details]
Example analysis: (using DMA mode) mian function: extern __IO u16 ADC_ConvertedValue; //The voltage value converted by ADC is defined in the context of ADC1_Init() float ADC_ConvertedValueLocal; ...[Details]
Manually assemble the following program machine code and analyze the execution function of the program segment. CLR A MOV R2, A MOV R7, #4 LOOP: CLR C MOV A, R0 RLC...[Details]
It is required to use timer/counter 1 for timing, with a timing of 1 second; timer/counter 0 for counter, and the external pulse to be counted is connected from P3.4 (T0). The microcontroller will co...[Details]
Use P1.0 to output 1KHz and 500Hz audio signals to drive the speaker as an alarm signal. It is required that the 1KHz signal sound for 100ms and the 500Hz signal sound for 200ms, alternating between...[Details]
The following comes from - "cortex-M3 Definitive Guide" Special function register group: Program Status Registers (PSRs or xPSRs) Interrupt mask register group (PRIMASK, FAULTMASK, and BASEPRI) ...[Details]
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