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example 1 draw line segment from point 2 4 to 9 9 by using digital differential analyzer algorithmsolution we know usual equation of line is
assumption regarding to the digital differential analyzer algorithmthe line generation by dda is discussed merely for the first quadrant whether the
graphic primitivesin previous section we have discussed refreshing display devices and its categories which are raster and random scan display
liquid crystal display - graphics hardwareit is a type of display utilized in digital watches and several portable computers these work along with
advantage and disadvantage of plasma panel - graphics hardwareadvantage1 slim design as wall mountable2 larger than lcd screensdisadvantage1
plasma panel - raster graphics and clippingthis is an inherent memory device images can be written into the surface point by point and they keep
example 1 determine the number of memory bits essential for three bit plane frame buffer for the 512 x 512 rastersolution whole memory bits needed
similarly we can control the intensity of colourswe contain more bit planes for all colour say three bit planes for r 3 for g and 3 for b here all
essential elements for the raster scan displaythree elements are essential for the raster scan display they are as1 the frame buffer that is also
disadvantage of the raster scan display devicethe major disadvantage of the raster scan is the jagged nature of the lines happening from the
random scan display devicethe original cathode ray tube developed in the late fifties and early sixties produced charts and pictures line through
types of refresh monitors - raster scan and random scanthere are two types of refresh monitors ie the raster scan and random scan that will be
display devices - graphics hardwaresince the importance of output and input devices has been discussed over so let us now focus our discussion
film recorders - graphics hardwareit is a graphical output device for transferring digital images to photographic films the easiest film recorders
dissimilarity between the printer and the plotter1 plotters print their output through moving a pen across the surface of papers pieceit implies
pen tablet and plotterpen tablet it is a digitizer tablet which is specialized for handwriting and hand marking lcd-based tablets imitate the flow of
tablet computer - cad and camtablet computer it is a complete computer comprises in a touch screen tablet computers can be specialized for only
a voltage or electro-magnetic field tablet and pointer this has a grid of wires embedded in the tablet surface along with various voltages or
the hand-held pointer and tablet in the form of a stylus ie pen or puck can function one or more of these three functionsi for choosing positions
graphics tablet - cad and camwe need to know what we mean via tablet in computer terminology before going into details on the graphic tablet since in
interrupts - event driven devicesinterrupts an option to polling is the interrupt feature the device sends an interrupt signal to the processor while
event driven devices - pollingpolling the status of all devices is periodically checked in a repetitive manner through a polling loop while an event
types of touch panels1 electrical tss wire grid or the other conductive coating is utilized to specify a voltage drop at the point touched point from
touch panels - input and output devicesit allows displayed screen or object positions to be selected along with the touch of the finger and is also
input and output devices - computer aided designoutput and input devices are quite significant for any software since an unsuitable selection of the