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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
ground water levels the location of the ground water level is essential for deep excavation water-logged areas the existing wells in the nearby
determine the depth of explorationthe depth of exploration depends on the following factorsi size type of the structure and loading intensityii
define about the inclined boringsinclined brings may also be used in exploration of inclined strata and for the detection of weak pockets
describe the features of physical survey phasethe physical survey field and laboratory test for the purpose of determination of physical and
features of a stratigraphical survey phasethe principal features of a stratigraphical survey phase area determination of depth of ground water
determine the interdependent phases of investigationthe following are the interdependent phases of investigationi stratigraphical surveyii
state the problem and phases of site investigationthe site investigation is to be performed to obtain the solution for the following problemsi
a6kva100v500v single-phase transformer has a secondary terminal voltage of 4875 volts when loaded determine the regulation of the