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what is digitizersa common device for drawing painting or interactively selecting coordinate positions on an object is a digitizer these devices can
state about the data glove data glove is used to grasp a virtual object the glove is constructed with a series of sensors that detect hand and
determine the features of keyboardscommon features on general-purpose keyboards are cursor-control keys functions keys are used to enter frequently
explain the uses of keyboardsan alphanumeric keyboard for a graphics system is used primarily as a device for entering text strings keyboards can
explain the working of light penslight pens still exist but due to several disadvantages they are not as popular as other input devices that have
determine about the pick devicelight pensthe light pen used to select screen positions by detecting the light coming from points on the crt screen
what are the touch panelsin case of touch panels displayed objects or screen positions is allowed to be selected with the touch of a finger a typical
enumerate about the trackballa trackball is a two-dimensional positioning device a spaceball provides six degrees of freedom unlike the trackball a
explain the uses of thumbwheels two thumbwheels are usually required to control the screen cursor in its horizontal and vertical position
state about movable joystickin another type of movable joystick the stick is used to activate switches that cause the screen cursor to move at a
explain the trackball and thumbwheel devices joysticksa joystick consists of a small vertical lever called the stick mounted on a base that is
determine about the locator devicesmouse a mouse is small hand-held box used to position the screen cursor wheels or rollers on the bottom of the
explain about the logical devices locator to indicate a position andor orientation pick to select a displayed entity to input a single value in the
what are the input devicesvarious devices are available for data input on graphics workstations most systems have a keyboard and one or more
determine about the raster-scan systems most of the present raster-scan systems contain a separate processor called as display processor this
explain the raster scan monitorsthe refresh process must also be performed for raster scan monitors most television monitors are raster scan display
disadvantages of random scan display- just by wire-frame it is almost impossible to create images with shaded objects or areas filled with a given
advantages of random scan display early computer displays basically an oscilloscope control x y with verticalhorizontal plate voltage often used
explain in detail about the random scan display this device using crt directs the electron beam only to the parts of the screen where a
explain the statement- crt screen as a two-dimensional matrixone can imagine the crt screen as a two-dimensional matrix which has m rows and n
describe the working of crtthe electron beam produces a tiny bright visible spot when it strikes the phosphor-coated screen a colour crt monitor has
state the importance of crt monitorcrt is considered to be one of the most important component because the quality of displayed image influences the
cathode ray tube technology crtcrt is an analog device that is used by a digital device - computer the interface between these two devices is
name the various display devicesdifferent types of display devices are discussed along with the principles on which these work the main display