AlexeySm

A quantum computer is a computing device that uses the phenomena of quantum mechanics (quantum superposition, quantum entanglement) to transmit and process data. A quantum computer (unlike a conventional one) operates not with bits (which can take on the value of either 0 or 1), but with qubits that have values of both 0 and 1 at the same time. Theoretically, this allows processing all possible states simultaneously, achieving a significant advantage (quantum superiority ) over ordinary compu...

Ethereum (Ethereum, from English ether [ˈiːθə] - “ether”) is a cryptocurrency and a platform for creating decentralized online services based on rafts (decentralized applications) built on the basis of smart contracts. Implemented as a single decentralized virtual machine. The concept was proposed by Vitalik Buterin at the end of 2013, the network was launched on July 30, 2015. Ethereum emerged not so much as a payment system, but as a base for the affordable use of search technologies in thi...

Cryptography for confidential payments has been used since 1990 in the DigiCash system of David Chaum, whose company went bankrupt in 1998. This payment system was centralized. For the first time, the term "cryptocurrency" began to be used after the appearance of the Bitcoin payment system, which was developed in 2009 by a person or group of people under the pseudonym Satoshi Nakamoto (identity as of December 2018 has not yet been established). The term “cryptocurrency” became widespread afte...