Mainframes - the original cloud computers. I started on mini-mainframes but then worked mostly with networks of PCs. The old mainframes guys used to say 'just

Mainframes - the original cloud computers. I started on mini-mainframes but then worked mostly with networks of PCs. The old mainframes guys used to say 'just you wait the pendulum will swing back to centralized computing'. In the age of cloud computing they were right, and those mainframes are still there too.