Digital Data Flashcards
Define the term data?
Raw facts and figures which have no meaning
Define the term information?
Data that has been processed to give meaning
What do computers store data as?
Computers store data as a series of 1’s and 0’s
What is a bit?
A single 1 or 0
What is a nibble?
4 bits
What is a byte?
8 bits
How many bytes are in a kilobyte?
1000 bytes
How many kilobytes in a megabyte?
1000 KB
How many megabytes in a gigabyte?
1000 MB
How many gigabytes in a terabyte?
1000 GB
How many terabytes in a petabyte?
1000 TB
What data type is 12?
Integer
What data type is 12/3/2019
Date/Time
What data type is a single letter or digit?
Character
What data type is AC12G?
String
What is a pixel?
The smallest unit of a digital image that can be displayed and edited
What is the resolution of an image?
The number of pixels in the image
What is a bitmap image?
This is an image that are generated from electronic devices
What is an vector image?
Computer generated images
What are the disadvantages of a bitmap?
You can’t resize the image as you will lose quality (pixelation)
What are the advantages of vector?
Vectors can be resized without losing quality
Vectors take up less storage place than bitmap
What is the sample rate?
The rate at which samples are taken
What is the bit depth?
The number of bits used to store each sample
What is the bit rate?
The number of bits processed in any given time in the playback?
