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Peer-to-peer networks

Peer-to-peer networks

Cryptocurrencies have been hailed as one of the greatest technological revolutions of recent years. Bitcoin is the pioneer and best-known of them, but there are hundreds more – each with different characteristics, objectives and technologies behind them to make them work. Readers might think that electronic money already existed long before cryptocurrencies, and they would be right. Bank...

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How did Blockchain commence?

How did Blockchain commence?

As we previously mentioned in an article published in June 2019, the Bitcoin did not create a new computer technology but integrated a series of pre-existing techniques in a revolutionary manner. The possibilities this protocol could bring were soon condensed in a new disruptive paradigm known as BLOCKCHAIN. But what is Blockchain exactly? In its strictest sense, Distributed Ledger Technology...

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All gigabit accesses are born (free?) and equal…

All gigabit accesses are born (free?) and equal…

When gigabit accesses are mentioned, the first thing that comes to mind for most of us (especially in Spain) is a fibre-optic access network for speeds beyond 50Mb. Carriers take the optical fibre to your home, install an ONT and that’s it. Customers can choose between 100Mbps, 300Mbps, 600Mbps and even 1Gbps plans, depending on what they’re willing to pay. If there is no fibre coverage at your...

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Why Apache Kafka?

Why Apache Kafka?

These days, numerous applications follow a microservices architecture. And many applications manage large amounts of data (user activity on the application, logs, metrics, etc.) that are constantly travelling back and forth between microservices. This can produce a series of problems when it comes to integrating all this information – such as the synchronization, scaling and processing of the...

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In the beginning there was BITCOIN

In the beginning there was BITCOIN

Few things have spurred as much interest in the ICT sector in recent times as Blockchain technology. It stems from an article titled “Bitcoin: A Peer-to-Peer Electronic Cash System” published on May 24, 2008 by a certain Satoshi Nakamoto[1] , along with a computer application launched a few months later (November 1, 2008). Whether or not Satoshi Nakamoto (whose identity remains mysterious, but...

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A plate full of symbols

A plate full of symbols

Just by looking at the bottom or rear part of an electronic IT device (such as a computer, router, monitor, etc.) or its accessories (mouse, keyboard or power source), we can identify a common feature: all of them have an identifying plate full of symbols. Each represents the product’s conformity with a series of rules or regulations applicable in a given country or economic area. The reason...

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Many kinds of multiprocessing systems

Many kinds of multiprocessing systems

Multiprocessing is the use, within the same system, of several CPUs that share resources among them. There are many kinds of multiprocessing systems and they vary according to different aspects. Their type will first depend on the location of the CPUs (i.e., whether they are on the same die, chip or on the same board). Secondly, the multiprocessing system can vary depending on whether all CPUs...

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How to be a leader in technology without losing anonymity

How to be a leader in technology without losing anonymity

It is well known that, ever since they first appeared in the 80s, PCs have CPUs with Intel architecture. The fact that there are many systems based on PCs is also common knowledge. However, the general public may be unaware of the features of embedded systems around us (such as cell phones, tablets, vehicles, appliances…). A great number of systems use an architecture created by an atypical...

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IP over Avian Carriers

IP over Avian Carriers

While April Fools’ Day in the Anglo-Saxon world is a day for playing tricks on people, I can assure you that, as incredible as it may seem, what I’m about to tell you is absolutely true… As the title of this article suggests, there is indeed a standard for sending IP datagrams by carrier pigeon. The standard where this strange transport system – that uses carrier pigeons with IP packets written...

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