Showing posts with label Tech-News. Show all posts
Showing posts with label Tech-News. Show all posts
8:09 PM
Can PlayStation Now deliver on the promise of game streaming from the cloud?
5:16 AM
Facebook Starts Building Its Own Networking Gear
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After designing its own computer servers, data storage gear, and electrical equipment for the massive computing facilities that run its many web services and mobile apps, Facebook has now built its own networking switches, the hardware devices that shuttle information from machine to machine.
Facebook vice president of engineering Jay Parikh unveiled this new-age networking gear at an event in San Francisco, saying that, much like Facebook’s other custom-built hardware, it would help the company expand to even greater sizes and more efficiently run its next wave of online services. In short, the gear will ease the process of both building and managing the ever expanding data-center networks that drive Facebook’s internal operation. Unlike traditional networking hardware, Facebook’s switch is modular, meaning the company can more easily swap components in and out, and it can run the company’s own customized software as well.
With traditional networking gear, Parikh said, “we were running into a lot of things that slow down. It doesn’t give us the flexibility we want–the control we want–the ability to configure things, monitor things, adjust [network] flows with things like Messenger, Instagram, Search, and all the other workloads we have. Being able to manage all that on the network is a very rich area for optimization.”
Code-named “Wedge,” Facebook’s new switch is built around the same microprocessor module at the heart of its computers servers.
The move is part of a much larger trend among the giants of the web.
In an effort to reduce costs and improve efficiency, Google has designed
its own networking gear for years, and various startups, including Cumulus Networks and Big Switch,
are working to promote a new type of gear that anyone can customize
with their own software. Traditionally, networking hardware from
companies such as Cisco and Juniper has been expensive and difficult to
program. But led by Google, Facebook, and others, we’re now moving
toward a world where building networks is far easier and far cheaper.
FacebookPreviously, Facebook has “open sourced” its server, storage hardware, and other data center designs, sharing them with the world at large, and though it has not yet released the designs of its new networking switch, Parikh indicated the company would eventually do so through the Open Compute Project, the not-for-profit it founded to further improve data-center hardware designs and reduce costs by creating a community of companies that openly trade ideas.
Facebook’s Najam Ahmad, who works on Facebook’s networking project, tells us that the company will indeed open source the designs, and though he said Facebook will stop short of open sourcing its custom networking software, now know as FBOSS, the company may share certain software libraries used to build this software. In the past, by sharing its data center work with the outside, Facebook has directly spurred others to make similar changes inside their data centers, and as the company rolls its new gear into its own computing facilities, we will surely see other do much the same. A new networking age is upon us.
9:32 PM
Surface Mount Electronic Device SMD
Circuit of a mobile phone looks like general circuit but the parts in printed circuit boards (PCB) of mobile phone
are different from normal thru-hole electronic components. These
electronic components are known as surface mount device or surface mount
electronic components.
These SMD electronic components on the
PCB of a mobile cell phone generally do not have any leads. Components
that have leads are bent in a manner that they can be mounted only on
the surface of the PCB and hence the name “Surface Mount Device”. Most
of the electronic components on the PCB of a Mobile Cell Phone are BGA
or Ball grid Array Packages.
SMD Components of Mobile Phone PCB
What is SMD or Surface Mount Device or Surface Mount Electronic Component?
Surface mount devices of SMD are
electronic components that are easily soldered or mountable on the
surface on the PCB. Most of these PCBs are multilayered PCB which means
these PCB have more than one layer. The technique of soldering or
utilizing SMD components is called SMT (Surface Mount Technology).
What are Advantages of SMD?
SMD type electronic components offer
many advantages. The main advantage is that they are space saving. The
size of mobile phones has been significantly reduced because of the use
of SMD components. SMD components use less electricity and voltage loss is also very less.
Uses of SMD Electronic Components?
Presently SMD of Surface Mount Devices
are used in ultra modern electronic equipments like mobile cell phones,
computers, laptops tablets etc. all the components used in Surface Mount
Technology are mostly in the form of chips or IC (Integrated Circuit).
These chips or ICs are classified into different categories depending of
the type of legs or leads they have and their function. These
components are mounted directly at the specified location on the copper
track of the Printed Circuit Board using Surface Mount Soldering Technology.
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