Track – this is one “ring” of the data on one side of the disk. Track record on the disk is too large to use as unit of information storage. In many drives, the capacity of more than 100 thousand bytes, and gives the unit for storing small files are very wasteful. Therefore, the tracks on the disk is divided into numbered segments called sectors.
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Track and sector
The principle of hard drives
Basic principle of hard drives and floppy disks work are almost identical: the data is written and read by the universal read-write heads from the surfaces of the rotating magnetic disk, divided into tracks and sectors (512 bytes each), as in Fig. 1
Types of computer graphics (Part 2)
The main drawback of the bitmap that the pixel size is fixed. Because of this, in case of resizing the image is greatly distorted picture.
With a decrease in the bitmap , with the existing size of the pixels, some pixels are simply discarded, which leads to the disappearance of a quantity of information. Will not help reduce the size of the pixel, as the output device information, do not take too small pixels and image details coalesce with each other. raster image can be increased only by a multiple number, in two or three times and then only at preserving the original pixel size
