When we are moving into the era of big data, many professional vocabulary have to be carefully tasted. Understanding it will help clarify the direction in practice. From the time we started to understand the world, we are inseparable from metadata, which is the basis for us to understand the world. Today we will understand together what metadata is.
Metadata is a concept we must first understand. Also known as intermediary data and relay data, it is data about data, which is mainly information describing data properties, used to support functions such as indicating storage location, historical data, resource search, and file recording. Metadata can be regarded as an electronic catalog. In order to achieve the purpose of compiling the catalog, the content or characteristics of the data must be described and collected, so as to achieve the purpose of assisting data retrieval. Dublin Core Metadata InitiaTIve (DCMI) is an application of metadata. It was developed by the International Library Computer Center (OCLC) and the National Center for Supercomputing Applications (NaTIonal Center for SupercompuTIng ApplicaTIons, NCSA) in February 1995. The co-sponsored seminar is inviting 52 librarians and computer experts to jointly develop specifications and create a set of characteristics describing electronic files on the Internet.
Simply put, metadata is data that describes the data itself, in other words, it is not the object itself, it only describes the properties of the object, it is a data that describes the data itself. For example, if you want to shop online and buy a piece of clothing, then the clothing is the data, and the color, size, workmanship, style, etc. that you care about when you choose the clothing you want are its metadata; another example, a painting itself , Is the data. The author, completion time, size, price, type, etc. of this painting are its metadata.
When you usually play games, judge whether a piece of equipment is powerful, the strength, sensitivity, intelligence and other information displayed on the equipment are also metadata. Their effect is to tell you what the equipment data brings to you. It’s not the key that you choose to equip yourself with the data, because other equipment is also data, but you rely on metadata to choose and judge. It's like encountering a person who has only met once, but you have a certain image of him, then this image is a metadata of this person.
In Bee Bang Bang, it is also through a segmented data image method similar to metadata to achieve a service that can bring a high-quality experience to a specific group of people. Therefore, it is achieved through a big data analysis of the user through the channel. Strictly selected precise matching.
The value of metadata is very large. People or things we encounter in our daily life are basically judged through metadata. It has two values: one is to describe the goal from the side; the other is to be structured and informatized.
For example, we have to judge whether a painting is worthless. In addition to finding an expert to judge, it can also be judged through metadata.
For example, is this painting by a famous artist or by a second-rate painter? Is this painting a work of the painter's heyday, or is it a work of his youth? Is this painting a category that the painter is good at? After this information, we can probably estimate the value of this painting. Although there may be errors, this method is very scientific.
This is the value generated on big data: For unstructured and unquantified objects themselves, structured metadata can be used for quick calculations and judgments.
The first stage of big data application is auxiliary products, which provide support for products and help product personnel and market personnel make judgments. In the past, product research was very troublesome. Suppose there is a beverage company who wants to know which flavor the market likes most. They not only have to design a questionnaire, but also organize a lot of people to try it on the spot, and the results may not be accurate. With the Internet, you don’t have to be so troublesome, as long as you have real data, you can quickly analyze it. For example, Tencent knows how many of its WeChat users use Moments, how many posts a day, and what content they post. These are all real data. For another example, now a user buys ten boxes of water online every month, and the address left is a high-end restaurant, we know who the target audience of this bottle of water is.
The second stage of big data application is to create value. When the data accumulates to a certain extent, the data itself is valuable. For example, it is not an institution or association that China is most familiar with the consumption habits of ordinary people, but Taobao; it is not a bank or consulting company that has the most comprehensive personal credit information, but Alipay. The reason is very simple. All our consumption and transaction behaviors are on a certain platform, and this platform has all the data records, then the data itself is the product. If you sell consumer behavior data to advertisers, advertisers can target you to deliver advertisements; if you sell credit data to banks, the bank can determine your creditworthiness.
From another perspective, through the metadata of our behavior data, we are slowly describing the quantified information. For example, how much money you spend in a year, in what way, etc., can let others get a rough idea of ​​you through the data. Therefore, the third stage of big data application is to shape us. For example, if you have been using WeChat to contact a classmate recently, and you have been searching for a new movie on the Internet, then you are likely to watch this new movie with this classmate.
2.54mm (0.1") Pitch Female Headers
Overview
The most commonly seen female headers are 2.54mm (0.1") single or double row female/socket headers. These female headers together with its male counterpart are used in connecting Arduino boards and shields together. 2.54mm pitch female sockets/headers are low-profile connectors designed for signal and low power PC board connections when space is at a premium. They have the perfect height for clearing the USB-B connector and great for stacking multiple shields.
Since 2.54mm pitch female header is commonly used in a lot of applications, Scondar offers numerous options for this type of female header. Orientation can either be SMT or THM, single, dual or triple row. Antenk offers 2.54mm pitch female headers in either vertical or right-angle orientation. The pins and blades are also available in various sizes, counts, amperages, and plating.
The 2.54mm can accommodate a maximum current of 3A, with a 30 to 22 AWG wire size, and up to 40-positions. Antenk offers these female headers in high quality and affordable China-quoted price that snuggly fits with the pins of a male header and acts as a receptacle.
If you can not find the items you interest from above items, welcome to contact us, and you will always get fully responsive from us.
Applications of 2.54mm Pitch Female Headers
Electronics:
LED applications
Arduino boards
Arduino Pro
Arduino Mega
Solar applications
Weighing systems
Appliances:
Air conditioner
Refrigerator
Microwave oven
Washing machine
Water heater
Shower toilet
Washer/Dryer
Stove
Automotive, Heavy Duty Military and Marine
For densely packed equipment requiring weight reduction and downsizing and for tough and harsh conditions.
Vehicle infotainment
Computer peripherals
Battery Connections
Battery connections rely on the ability of the current to pass reliable and solid current. This prevents overheating in the circuit and voltage drop.
Rechargeable battery packs
Battery balancers
Battery eliminator circuits
Medical Diagnostic and Monitoring equipment
Heart monitors
Telecoms
Datacoms
Mount Type: Through-hole vs Surface Mount
At one side of this female header is a series of pins which can either be mounted and soldered directly onto the surface of the PCB (SMT) or placed into drilled holes on the PCB (THM).
Through-Hole (Poke-In)
Best used for high-reliability products that require stronger connections between layers.Aerospace and military products are most likely to require this type of mounting as these products experience extreme accelerations, collisions, or high temperatures.
Useful in test and prototyping applications that sometimes require manual adjustments and replacements.
2.54mm, 1-row vertical female header, 2.54mm, 2-row vertical female header, 2.54mm, 3-row vertical female header, 2.54mm, 1-row right-angle female header and 2.54mm, 2-row right-angle female header, 2.54mm U-
Shaped Female header, 2.54mm U-Shaped Dual Row Female header are examples of Antenk products with through-hole mount type.
Surface-Mount
The most common electronic hardware requirements are SMT.
Essential in PCB design and manufacturing, having improved the quality and performance of PCBs overall.
Cost of processing and handling is reduced.
SMT components can be mounted on both side of the board.
Ability to fit a high number of small components on a PCB has allowed for much denser, higher performing, and smaller PCBs.
2.54mm, 2-row right-angle female header and 2.54mm, 1-row right-angle female header are Antenk`s featured SMT female headers.
Orientation/Pin-Type: Vertical (Straight), Right-Angle and U-Shaped
2.54mm pitch female headers may be further classified into pin orientation as well, such as vertical or straight female header, right-angle female header or U-shaped female header.
Vertical or Straight Female Header Orientation
One side of the series of pins is connected to PCB board in which the pins can be at a right-angle to the PCB surface (usually called "straight" or [vertical") or..
Right-Angle Female Header Orientation
Parallel to the board's surface (referred to as "right-angle" pins).
U-Shaped Female Header Orientation
U-shaped orientation is characterized by the shape of the pins at one side of the header, forming a letter [U". It is often chosen for applications where repeat mating cycles are not required as it can also be used and soldered directly to both PCB's.
Each of these pin-types have different applications that fit with their specific configuration.
Single, Dual or Multiple Number of Rows
For a 2.54mm straight or vertical female header, the standard number of rows that Antenk offers ranges from 1 to 2 rows. However, customization can be available if 3, 4 or n number of rows is needed by the customer. Also, the number of contacts for the single row is about 2-40 pins while for dual row, the number contacts may vary from 2-80 pins.
Pin Material
The pins of the connector attached to the board have been designed with copper alloy. With customer`s demand the pins can be made gold plated.
Custom 2.54mm Pitch Female Headers
Customizable 2.54 mm pitch female headers are also available, making your manufacturing process way faster as the pins are already inserted in the headers, insulator height is made at the right size and the accurate pin length you require is followed.
Parts are made using semi-automated manufacturing processes that ensure both precision and delicacy in handling the headers before packaging on tape and reel.
Tape and Reel Packaging for SMT Components
Antenk's SMT headers are offered with customizable mating pin lengths, in which each series has multiple number of of circuits, summing up to a thousand individual part number combinations per connector series.
The tape and reel carrier strip ensures that the headers are packaged within accurately sized cavities for its height, width and depth, securing the headers from the environment and maintaining consistent position during transportation.
Antenk also offer a range of custom Tape and reel carrier strip packaging cavities.
Pcb Header Connector,2.54Mm Female Pin Header,2.54Mm Pcb Header,2.54Mm Pcb Connector,0.1" Pitch Female Headers,2.54mm SMT Female Pin Header, THT 2.54mm Female Pin Header
ShenZhen Antenk Electronics Co,Ltd , https://www.antenkelec.com