Related Clues:
- Computer availability
- Operating periods
- When surfing is possible?
- Productive period
- When the computer's on
- Working hours
- When a computer is functional
- Hours of operation?
- Computer-use period
- Hours spent working
- Period when a computer is functioning
- Factory's working hours
- Computer use period
- When computers work
- When computer operating, university training engrosses Berners-Lee