Eight practical ways to solve Spark data skew
What is data skew?
For distributed big data systems such as Spark/Hadoop, the large amount of data is not scary; what is scary is data skew.
For dis...
I saw on the Internet that "after the battery is disconnected, the power of the mobile phone is provided by the charger. At this time, the battery is in a dormant state, neither charging nor dischargi...
[i=s]This post was last edited by yangjiaxu on 2019-1-16 23:49[/i] I have been so depressed these past two days. I have not been able to log in to the Rapid IOT Studio online development environment. ...
[i=s]This post was last edited by Xiaotaiyangyy on 2021-8-11 14:49[/i]The silk screen on it says 96 TI. Is this from Texas Instruments? Why can't I find it?Because it is not clear, I re-uploaded...
1. ICEPICK_C: Error connecting to the target:
(Error -180 @ 0xFFFFFF4C) The controller has detected a target power loss.
The user must turn-on or connect the power supply for the target. (Emulation pa...
TI's touch chip MSP430FR2633 touch solution can support proximity sensing. Generally, the proximity sensing PCB Sensor will be placed close to the machine casing. Antistatic tests will be performed du...
Abstract: Based on the characteristics of ARM chip and FPGA, a communication scheme between ARM and FPGA artificial neural network processor is designed. This scheme uses ARM's ZDMA controller to con...[Details]
6 main reasons for LED lamp damage
白光LED属于电压敏感型的器件，在实际工作中是以20mA的电流为上限，但往往会由于在使用中的各种原因而造成电流增大，如果不採取保护措施，这种增大的电流超过一定的时间和幅度后LED就会损坏
1. A sudden increase in the power supply voltage.
2....[Details]
Samsung recently launched the Galaxy Note20 series at the Unpacked 2020 event, and it is safe to assume that the company has already started working on its next flagship series, presumably the...[Details]
Data released by the U.S. Energy Information Administration (EIA) on December 8 showed that by the end of 2025, developers and power plant owners plan to expand large-scale energy s...[Details]
The high temperature curing box comprises a main box body, wherein a test chamber is arranged in the main box body, and the inner wall of the test chamber is coated with a protective layer, where...[Details]
Introduction: With the development of integrated circuit technology, FPGA, DSP and ARM are widely used in high-speed digital signal transmission and data processing due to their small size, fast spee...[Details]
1 Overview
This scheme uses PIC 16F877A microcontroller as the main core control element, and designs a 32×32 LED dot matrix module writing display screen. It is mainly composed of a light pen ...[Details]
Abstract: Various radar signal generation methods based on FPGA are introduced. The method of realizing direct digital synthesizer (DDS) in FPGA and improving the quality of output signal is introd...[Details]
Does your optical sensing wearable provide continuous, real-time monitoring under a variety of measurement conditions, saving as much power as possible? You’ve probably designed your device to acco...[Details]
Bluetooth is a radio technology that supports short-range communication between devices (generally within 10 m). It can exchange wireless information between a wide range of devices, including mobi...[Details]
introduction
An isolated converter is needed to provide electrical isolation between two related systems. In certain applications, isolation between the power supply and the load is required t...[Details]
The implementation steps of the de-jittering filter method are as follows: set a filter counter, compare each sampling value with the current effective value, and if the sampling value is equal to th...[Details]
Magnetic float level gauge installation The magnetic float level gauge is suitable for measuring the liquid level and interface level of the liquid level medium in the container. In addition to o...[Details]
In actual work, the design of MCU timer delay program is usually divided into two schemes: hardware delay design and software delay design. Among them, the software delay operation of MCU timer is mo...[Details]
ABB robots are intelligent devices widely used in the field of industrial automation. Their basic program data is the basis for realizing robot automation control. This article will introduce the b...[Details]
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