1.2.3 Units Flashcards
What does 1 show in a computer
Electricity is flowing
What does 0 show in a computer
Electricity is not flowing
What must all data on a computer be converted to before being processed
Binary code
Bit
A single binary digit
Nibble
4 bits
b
Bit
Byte
8 bits
B
Byte
Kilobyte
1000 bytes
kB
Kilobyte
Megabyte
1000 kilobytes
MB
Megabyte
Gigabyte
1000 megabytes
Terabyte
1000 gigabytes
Petabyte
1000 terabytes
GB
Gigabyte
TB
Terabyte
PB
Petabyte
Example of something stored in B
A single character
Example of something stored in kB/MB
Most files (songs, pictures and documents)
Example of something stored in GB
High definition videos and complex applications
Example of something stored in GB/TB
Secondary storage
Formula to work out the number of values stored by a string of bits
2^n where n is the number of bits in the string
