We call all machines connected to the network nodes or nodes. Each of them keeps a copy of the blockchain and shares information with other devices connected to the same network. Users just need to download and install the software related to the same BlockChain so that all actions proceed automatically.

Great explanation of nodes in a blockchain network!  It's true that each node keeps a copy of the blockchain, creating a decentralized and secure system.  And for users, the ease of just installing software is a big advantage.  This makes blockchain technology user-friendly and accessible.
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