Data Representation

Question	Answer
Data Representation	representing data within computer systems is done by turning switches on and off
Binary	all data is represented by 1s and 0s (on and off) in computers
Denary	Counting system humans use Base 10
Hexidecimal	Used to read binary as 16 bit of data can be represented by a single character Base 16
Images	Made of an arrangement of pixels Pixels are stored in binary Higher the resolution the better the picture
Sound	Stored as binary Sample the analogue to store a digital representation of the original sound Higher the sampling rate the higher the quality
Bit	1 or 0
Nybble	4 bits
Byte	8 bits
Kilobyte	1024 bytes
Megabyte	1024 kilobytes
Gigabyte	1024 megabytes
Terrabyte	1024 gigabyte
Petabyte	1024 terabytes
Exabyte	1024 pentabytes
Zettabyte	1024 exabytes
Yottabyte	1024 zettabytes
ASCII	American Standard Code for Information Interchange

Resource summary

	Created by rwc.carlton almost 10 years ago