Question

Write a brief notes on any two input devices?

Answer 1

1. Keyboards' are a human interface devicewhich is represented as a layout of buttons. Each button, or key, can be used to either input a linguistic character to a computer, or to call upon a particular function of the computer (the keys are assigned for definite commands which is processed by the CU (Control Unit -- a part of CPU). They act as the main text entry interface for most users. Traditional keyboards use spring-based buttons, though newer variations employvirtual keys, or even projected keyboards. It is typewriter like device composed of a matrix of switches.

2. Pointing devices are the most commonly used input devices today. A pointing device is any human interface device that allows a user to input spatial data to a computer. In the case of mouse and touchpads, this is usually achieved by detecting movement across a physical surface. Analog devices, such as 3D mice, joysticks, or pointing sticks, function by reporting their angle of deflection. Movements of the pointing device are echoed on the screen by movements of the pointer, creating a simple, intuitive way to navigate a computer's graphical user interface (GUI).

Answer 2

Answer:

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1. Keyboards' are a human interface devicewhich is represented as a layout of buttons. Each button, or key, can be used to either input a linguistic character to a computer, or to call upon a particular function of the computer (the keys are assigned for definite commands which is processed by the CU (Control Unit -- a part of CPU). They act as the main text entry interface for most users. Traditional keyboards use spring-based buttons, though newer variations employvirtual keys, or even projected keyboards. It is typewriter like device composed of a matrix of switches.

2. Pointing devices are the most commonly used input devices today. A pointing device is any human interface device that allows a user to input spatial data to a computer. In the case of mouse and touchpads, this is usually achieved by detecting movement across a physical surface. Analog devices, such as 3D mice, joysticks, or pointing sticks, function by reporting their angle of deflection. Movements of the pointing device are echoed on the screen by movements of the pointer, creating a simple, intuitive way to navigate a computer's graphical user interface (GUI).