CSC 1100 Lecture Notes - Lecture 4: Conio.H, Assembly Language, Machine Code

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File management is a key skill of the application developer. Storing files in an organized folder structure enables you to retrieve the files quicker. The ascii standard represented 128 different characters in seven bits. The extended ascii standard represented 256 different characters in eight bits. See integer-to-character mapping sample application on blackboard. Images are represented by an array of picture elements (pixels). Each pixel is a mixture of three colors: red, green, and blue. Each color is represented with one byte / eight bits so three bytes / 24 bits are needed for each pixel. Here are the colors resulting from different values for the red, green, and blue color components: For a 101 megapixel (10 million pixels) image, the number of bits needed is: 10 million pixels x 24 bits = 240 million bits image pixel image. There is also a transparency component of one byte / eight bits: 11111111 / xff is fully opaque (not transparent).

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