Amandeep Singh

Blockchains are incredibly popular nowadays. But what is a blockchain? How do they work, what problems do they solve and how can they be used?  Like the name indicates, a blockchain is a chain of blocks that contains information. This technique was originally described in 1991 by a group of researchers and was originally intended to timestamp digital documents so that it’s not possible to backdate them or to tamper with them. Almost like a notary. However it went by mostly unused until it was adapted by Satoshi Nakamoto in 2009 to create the digital cryptocurrency Bitcoin.  A blockchain is a distributed ledger that is completely open to anyone. They have an interesting property: once some data has been recorded inside a blockchain, it becomes very difficult to change it.  So how does that work?  Well, let’s take a closer look at a block. Each block contains some data, the hash of the block and the hash of the previous block. The data that is stored inside...

Oppo x 2021 is the world's first rollable display phone. It is a new technology with AR/VR features.  Oppo x21 runs on Android v11(Q) operating system. This device is powered by octa core processor. It runs on Qualcomm Snapdragon 855 chipset.  Storage : 12,12 GB RAM and 512 GB internal storage  Which is huge as a smartphone. Camera :  Oppo x21 has triple rear TOF 3D 48MP/1.7 F camera. Which gives larger and amazing view during photography. There is no knowledge about front camera now. You will get many results about its front camera on internet. But don't focus, those are all fake. Oppo officially has not revealed its front camera. Battery : Oppo x21 has a powerful, huge and unremovable battery of 4235 Mah. Charger : Oppo has given 125 Watt charger. Undoubtedly, its so powerful. It charges 0 - 40% in just 5 minutes. This charger can also be used to charge other big device like laptop. Screen :  Oppo x21 is made with an OLED ...

T echnology is something which is digitally spreaded across the world and increasing and gaining importance day by day. Even the device you are holding in your hand is technology. Today, i am gonna tell you about a super device. Meet   Dji Spark Small, colorful , smart A powerful flying camera that you can take anywhere. It's so clever it activates by recognizing you. Just launch it from the palm of your hand.  It even returns when you call it.Control it with your hands, remote controller, mobile device, or DJI Goggles, using GPS , Spark knows where it is, even if you don't.                               1. Palm controller              2. Dji googles           3. Mobile device              4. GPS controller It...