COMPUTER FUNDAMENTALS

Detailed explanation-1: -A touch screen is a special display screen. Input is given to the computer directly by touching the screen with user fingertip. Most touch screen computers use sensors in the computer’s screen to detect the touch of a finger. Touch screen is often used in ATM.

Detailed explanation-2: -The major pointing device is the mouse for the desktop computer and the touchpad for the laptop, although many road warriors bring along a mouse. Pointing sticks are available on some laptops, and a small number of users prefer trackballs over the mouse. See mouse, touchpad, trackball and pointing stick.

Detailed explanation-3: -Touchscreens are common in devices such as smartphones, handheld game consoles, personal computers, electronic voting machines, automated teller machines and point-of-sale (POS) systems. They can also be attached to computers or, as terminals, to networks.

Detailed explanation-4: -For desktop computers, the most common pointing device is the computer mouse. For laptop computers, the most common pointing device is the touchpad. Finally, for smartphones and tablets, the most common pointing devices is your finger on a touch screen.