Proof-of-work mining (the type of mining used for Bitcoin and other cryptocurrencies) has some negative environmental impacts… as do the systems behind most other mediums of exchange.
Computer software is any set of instructions that directs a computer to perform specific operations, all programs and code are computer software. Computer software is non-tangible and different from computer hardware (the physical part of a computer).
Bitcoin and other cryptocurrencies look like they are in a bubble here in 2017, in terms of historic bubbles, but no one can predict the future.
Mixed Reality is a mix of Augmented Reality and Virtual Reality where physical and digital objects co-exist and interact in real time.
Though there are a lot of components to a computer, we look at the few basic parts of a computer: CPU, RAM, HardDrive, GPU, Buses, and input/output.