Digital Data 0.0 / 5 ? ComputingRepresenting dataGCSECCEA Created by: Rhys RobinsonCreated on: 14-12-17 11:01 What is data? Data consists of raw facts and figures. 1 of 18 What is information? Information is data that has been processed to become meaningful. 2 of 18 How do computers store data? Using a number system known as binary digit (also known as a bit.) 3 of 18 What is a bit? The smallest unit of storage in a computer. Has a value of 0 or 1. 4 of 18 What is a byte? 8 or more bits. 5 of 18 What is a nibble? It is four bits. Therefore 2 nibbles is equal to 1 byte. 6 of 18 What is 1 kilobyte? 1024 bytes. 7 of 18 What is 1 megabyte? 1024 kilobytes. 8 of 18 What is 1 gigabyte? 1024 megabytes. 9 of 18 What is 1 terabyte? 1024 gigabytes. 10 of 18 What is each character? Each character is 8 bits. 11 of 18 How do you optimise a cumputers processing power? Store data in the most appropriate way. 12 of 18 What is a pixel? A pixel is the smallest unit of a digital image that can be displayed and edited on a computer screen. 13 of 18 What is each pixel stored as? Each pixel is stored as binary digits. 14 of 18 What is image resolution? Image resolution tells us the quality of an image. 15 of 18 What happens when the resolution is higher? The image takes up more storage. 16 of 18 What is image resolution represted by? It is represented by 2 numbers e.g. 1280 X 720. 17 of 18 How do you tell the postion of a pixel? Using a similar system to (X,Y). 18 of 18
Comments
No comments have yet been made