Data Representation and System Architecture 0.0 / 5 ? ComputingRepresenting dataGCSEOCR Created by: rishcakesCreated on: 19-09-17 14:40 What is ASCII? ASCII code is the numerical representation of a character such as 'a' or '@' or an action of some sort. 1 of 17 What number is a in ASCII in decimal? 97 2 of 17 What number is A in ASCII in decimal? 65 3 of 17 What number is 0 in ASCII in decimal? 48 4 of 17 How many bits does ASCII require? 7 bits 5 of 17 What is a character set? The characters available to a computer are called its character set. 6 of 17 What is color depth? The amount of colors that can be made using a certain amount of bits. 7 of 17 How many bits are in deep color? 32+ 8 of 17 How many bits are in true color? 16 9 of 17 How many bits are in high color? 24 10 of 17 What is resolution? Number of pixels per unit 11 of 17 What is metadata? Metadata means 'data about data' and provides information about the image. 12 of 17 How does the resolution of an image affect the size of the file? Gets bigger 13 of 17 What is a pixel? The smallest element of an image. 14 of 17 What is image size? Length and width of a image. 15 of 17 How many colors can be represented using a 4-bit color depth? 16 16 of 17 How do you calculate bit rate? Frequency × bit depth × channels = Bit rate 17 of 17
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