MC0072 Computer GraphicsSet-11. Explain the development of hardware and software for computer graphics.Ans:Development of Hardware and Software for Computer GraphicsThe development of hardware of computer graphics involves the development of inputand output device technology. Therefore, in all development of computer graphicsinvolves the development in three fields:1. Output technology2. Input technology and3. Software technology1 Output TechnologyFig. 1.3 shows the historical development in the output technology. In early days ofcomputer the hardcopy devices such as teletype printer and line printer were in use withcomputer driven CRT displays. In mid fifties command and control CRT displayconsoles were introduced. The more display devices developed in mid-sixties and incommon use until the mid-eighties, are called vector, stroke, line drawing or calligraphicdisplays. The term vector is used as a synonyms for line; a stroke is a short line, andcharacters are made of sequence of such strokes.Fig. 1.32 Input TechnologyInput technology has also improved greatly over the years. Number of input devices weredeveloped over the years. These devices are punch cards, light pens, keyboard, tables,mouse and scanners.3 Software TechnologyLike output and input technology there is a lot of development in the softwaretechnology. In early days low level software were available. Over the years softwaretechnology moved from low level to device dependent and th ...
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