The Economist today contains a Special Report on Corporate IT that says that the first ‘computers’ were actually real people who solved equations in large companies (for example, working in aviation). The term ‘computer’ only later described electronic hardware.
The same special report refers to a McKinsey report that says that only 6% of server capacity is used. This is hardly too surprising since enterprise architects need to design for peak loads and provide backups and failover. But the really surprising fact is that nearly 30% of servers are no longer in use – at all!