With an individual computer at each seat of a 400-passenger plane, he said, the system did not always work throughout the aircraft.
In computing, a cluster is made of many individual computers that work together to solve a problem at hand.
Often, scientists and researchers work with calculations so complex that it would take years for individual computers to complete them.
It also meant that the individual computers in the system wouldn't always be reliable.
This machine is not linked to their individual personal computers.
And many times individual computers are left out of backup schedules altogether.
He was also an early proponent of giving students individual computers in the classroom.
To find out about sharing information between individual computers and systems, see our guide on computer networks.
They are the survivors of 172 teams from 33 countries that began competing seven months ago, playing throughout on individual computers.
This ensured that each student in year 9 had access to individual computers.