Q. What is Data Representation?
Information Today arrives in different forms such as numbers, text, images, audio and video.
Text: Represented like a bit pattern a sequence of bits 0s or 1s. Different codes are utilized
- ASCII (7 bits per symbol)
- Extended ASCII (8 bits per symbol)
- Unicode (16 bits - supports different languages)
- ISO (32 bits)
Data Representation (2)
Numbers
- Converted to a binary number to make simpler the mathematical operations
Images
- Symbolized by bit patterns
- Every pixel is assigned a bit pattern
- Black/ White Image 1 bit per pixel
- Gray scale images depends on numeral of levels in gray scale
- Color images: every pixel has 3 bit patterns (RGB)
Audio / Video
- Converted in to Analog and Digital