os.startTimer

Function os.startTimer
Adds a timer which will fire a "timer" event once after time seconds have passed. It returns an int which acts as a unique ID for the timer. Fractions of a second are supported, but only down to a game tick, or 1/20 of a second (0.05s). Times are rounded up to the next tick, so os.sleep(1.01) and os.sleep(1.05) both wait for 1.05 seconds.
Syntax	os.startTimer(number time)
Returns	number timerID
Part of	ComputerCraft
API	OS

Examples

Example
Yields until 3 seconds have passed.
Code	local myTimer = os.startTimer(3) while true do local event,timerID = os.pullEvent("timer") if timerID == myTimer then break end end