According to eHow, a computer desk should ideally be 20-28 inches off of the ground and should be at the level of your elbows. eHow also states the you should have 15 inches of clearance between your legs and the top of the desk.
17"
Most computer companies use inches to display their screen sides.
Every screen will be different. You can approximate for your particular computer by dividing the height of the screen in pixels (the second number in your display resolution) by the height of the screen in centimeters. The number you get will be "pixels per cm" for your screen.
foot
You should not. You should use centimetres.
The monitor needs to be set up. Most have controls to set up the height, width and screen positioning.
Your video settings are not correct for your monitor, or your monitor is not correctly adjusted for the proper height and width of the screen. The video settings are handled through the operating system settings. The monitor adjustments are usually on the front of the monitor at the bottom edge.
The joystick is wet OR there is white out on the screen.
A person typically contacts IT support for computer-related issues. This could be something as simple as a computer mouse not working properly or a screen that freezes.
If a computer crashed on the Window screen a wise thing to do would be to restart the computer. However, if the user does not fully understand what repercussions this could have it's wise to consult a manual that came with the computer, or consult a member of staff at a local computer shop.
Because the computer screen works like a tv screen
Get Really Good Parts, Nice Screen, and a good person to do it, like me
A command is when a person is told to do something. A computer functions by being given commands. When the mouse clicks the screen, it is giving a command.