data declaration means a variable which contain data value and it can be declared as integer, float, character, double, boolean (data types).
example:
int r;
char name;
float g;
double k= 23.34;
Answer:
Have a place for the who team can access all the information they need and use to put their work for project managers to check-up on. Having a when everything is organized in one place, the work will be much smoother.
It all depends on what you're doing online.
Mechanical mouse has a ball that turns rollers inside. If friction is lost between the ball and the mousing surface, or between the ball and the rollers, the mouse fails to work. In order to assure good contact with the mousing surface, the ball must be fairly heavy. When you change directions with the mouse, you must make the ball change rolling directions--an action that inertia likes to prevent.
An optical mouse makes use of an LED and some optics to detect surface texture and the changes in it as the mouse is moved. There are no moving parts
Answer:
You can buy one at gamestop, target, walmart, best buy and probably more stores
