Tag: Technology

    Home Posts tagged " Technology "

What is Blockchain? Blockchain can be described as an online database of transactions. It is used globally and has no owner. Anyone who can access the internet can use it First and foremost, What most people need to understand is that bitcoin is not blockchain. Bitcoin is an application of blockchain or a digital currency that can be used within a blockchain. Blockchain was designed as a way to eliminate the various problems experienced during money transfer. To better understand what blockchain is, we will look at the 3 very important concepts of blockchain. The open ledger system Imagine a group of 4 people who want to transact among themselves. We can call this a network and refer to the people as nodes. This people have to record each and every transactions they make among themselves on a single ledger. So if one of them, well call him Mark, had an initial balance of 100$ and transfers $40 to Mary, then he is left with $60 and the transaction is updated on the ledger. Each transaction made between these four, beginning with Mark, are linked chronologically to one another on the ledger forming some kind of a chain. This is what we call a blockchain. The ledger can be seen by every node in the network so it is impossible to cheat the system. For example, Mark cannot transfer more than $60 to anyone in the network because he is only left with $60. If he attempted to do so, such a transaction would be noticed by the others and considered invalid and hence would not be carried out. The distributed ledger system The ledger mentioned above is centralized. Blockchain now tries to get rid of such a system by distributing the ledger to every node in the network. Mark will have his personal copy of the ledger and so will Mary and the other a Anyone participating in the network will be able to hold the chain of events that happen. This is why blockchain is described as a decentralized ledger system. To ensure that all the nodes always have the same copy of the transactions in their ledger, a process called mining needs to be don. This is our third concept. Mining Transactions are done regularly within the network. If Mary wants to transfer her received money to another person in the group then she will need to show the transaction she wants to do, to everyone else. Bear in mind that the transaction is still not validated and therefore has not yet entered into the ledger. For it to be recorded in the ledger someone has to do mining. Miners are special people within the network who are able to validate the transaction for it to enter the ledger and by doing so they are financially rewarded. They will have to compete among themselves to do this. The miner will have to do: First, check if the funds are available for the requested transfer. They need to ensure that the person has the money he/she wants to transfer. Look for a special key that will allow them to link this transaction to the previous one. Finding the key will require some computation skills and also time Random keys will be generated until the miner finds the correct one that enables them to link the transactions. The first one to accomplish the task will be rewarded. This could be through bitcoin. On solving the problem, the miner will then distribute the solution to the entire network. Other miners and nodes will see that the key has already been found and the transaction validated. They can now add the transaction to their own ledger copies using the found key. This is essentially the concept of the blockchain. How is blockchain changing the world? Blockchain is eliminating the need for third parties during transactions. Everytime we send money through our banks or other online sevices, we are asking for permission from banks and other institutions to use their system to move money and of course they will not allow you to do this for free. They take a small percentage of your money as processing, service or transaction fees. The blockchain system does not need intermediaries and hence it is cheaper. You also do not have to submit your personal information to third parties. Money is being sent faster both locally and internationally. It is very frustrating having to wait for 3 to 5 days to receive money from someone abroad. Sometimes the situation may be an emergency and by the time the money arrives, you have no need for it Sending money abroad has become very fast through blockchain. You do not need imtermediaries who will have to follow lengthy procedures to complete your money transfer. Blockchain ensures that our money is secure. Many financial institutions these days are faced with fraud scandals. Some are even facing the risk of being closed down. Now picture a situation where you have all your money stored in such institutions. If the company is liquidated, then you run the risk of losing everything. Blockchain’s digital currencies, such as bitcoin, gives you a sense of security and more control over your money. Making transactions using the blockchain database also ensures that there is no likelihood of someone illegaly taking a small amount of your money and assuming you wont notice.

Can you remember the days when Candy Crush and Angry Birds dominated the app store? For sure, mobile gaming has come a long way. Today Android phones platforms are exploding with competitive games like Fortnite and PUBG. The best android gaming phones offer excellent hardware specifically made to deliver top mobile gaming experiences. Are you serious about mobile gaming? Do you know the best Android handset to get? Here are the top three fantastic android phones made for power users and gamers in the market. Razer Phone 2 Razer knows what it is doing when it comes to mobile gaming. In fact, it has followed up the great Razer phone with a more impressive upgrade, Razer Phone 2. With 1,440 by 2,560-pixel resolution, the phone’s 5.7-inch display screen is sharp at 513 pixels per inch and a refresh rate of 120Hz; no one can afford to miss any of its action. 8GB of RAM and Snapdragon 845 processor can work without overheating thanks to the phone’s improved cooling system inside the chassis. Specifications OS: Android 8.1 RAM 8GB Dimensions: 158.5 x 79 x 8.5mm Storage 64 GB Screen Size 5.7 inches CPU: Snapdragon 845 Although the 12MP+12MP dual lens rear-facing the camera and improved IP67 water resistance never pose a great concern to gamers, they help in ensuring Razer Phone 2 will do a perfect job in being a normal Smartphone. Build by game experts, and the Razer Phone 2 is the best android phone for mobile gamers. Huawei Mate 20 Pro Most phone users like Huawei Mate 20 Pro very much. In case you are shopping for the best android phone in terms of raw power, screen and fit and finish, it is difficult to get a phone that beats Huawei Mate 20 Pro. Specifications OS: Android 9 RAM: 6/8GB Dimensions: 157.8 x 72.3 x 8.6mm Storage: 128/256GB Screen Size: 6.39 inches CPU: Kirin 980 This phone has successfully managed to take every game we have thrown at it thanks to its 8GB of RAM that and nippy Kirin 980 processor. In case you do not have a job to do during the day or it’s on a weekend, the huge 4,200mAh battery on Mate 20 Pro is able to power it up the entire day as you enjoy gaming. Being a Huawei brand, it does excel in mobile photography with not less than three lenses on the rear camera. Honor Play Honor completes out top three list of best gaming android phones currently available in the market. With more and more people getting into mobile gaming, Honor play offers the extra platform with its 6.3-inch phone packs in 6GB of RAM and Kirin 970 processor. However, this phone does not have grunt like in the two phones mentioned above although it is still in a position to handle top mobile games. Specifications OS: Android 8.1 RAM: 6GB Dimensions: 157.9 x 74.3 x 7.5mm Storage: 64GB Screen Size: 6.3 inches CPU: Kirin 970 This android phone is promising and rare GPU Turbo mode capable of maintaining a smooth frame rate of any load type. Honor Play is a reliable android phone in relation to gaming prowess. You can never go wrong with any of the phones listed above.