T minus zero means out of time.. This comes from a countdown convention used in by both the American military and NASA. Generally, it is used when counting down to a major event that will happen at a specific time. Mathematically, T is time, minus whatever amount of time is left until the event happens. If the News Years ball is dropping in 10 minutes, one could say The ball is dropping in T minus 10 minutes and counting!.
mouse, computer mouse (noun). a hand-operated electronic device that controls the coordinates of a cursor on your computer screen as you move it around on a pad; on the bottom of the device is a ball that rolls on the surface of the pad. see more on Definitions.net Â». hand-operated electronic device that controls the coordinates of a cursor on your computer screen as you move it around on a pad; on the bottom of the device is a ball that rolls on the surface of the pad.
A computer mouse translates the movement you make with the mouse over a surface into actions of the cursor on the computer screen. The original mechanical mouse has given way to optical mice and laser mice. What is the difference between them? For the average user, the answer is there isn't much of a difference in how it will work for most purposes. It may come down to cost, as an optical mouse is usually less expensive than a laser mouse.