1 topic: living with a computer plan: Understanding of personal computer. Basic devices of a personal computer Additional devices of the personal computer
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20 – Lessons Esonov Elbek
Input devices are devices through which you can input data into the computer. Their main purpose is to understand the effect on the car. The diversity of input devices has created a whole range of technology from touch to sound. Although they work on different principles, they are designed to perform one task - to connect a person to a computer. Due to the compactness and clarity of presenting information to people, graphic communication devices are widely used. According to the degree of automation of search and selection of image elements, graphic data entry devices are divided into two large classes: automatic and semi-automatic. In semi-automatic input devices with graphic data, the task of searching and selecting image elements is assigned to a person, and the coordinates of the read points are automatically rotated. In semi-automatic devices, the process of searching and obtaining image elements is performed without human intervention. These devices are built either on the principle of scanning the entire image, then processing it and converting it from a raster image to a vector image, or on the principle of line tracking, which provides the reading of graphic data given in the form of graphics, graphics, contour images.
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