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computer science - Coggle Diagram
computer science
paper 1
1.2 memory and storage
1.2.1 memory
volatile memory
ram
virtual
non-volatile memory
rom
flash
types of memory
rom
ram
virtual memory
flash memory
1.2.2 storage
types of storage
magnetic storage
stores data in domains with huge capacity
solid state/ssd
holds data with magnetic switches
optical storage
uses laser to read disk from pits
1.2.3 units of storage
units
byte
8 bits
kilobyte
1024 bytes
nibble
4 bits
megabyte
1024 kilobytes
bit
gigabyte
1024 megabytes
terabyte
1024 gigabytes
petabyte
1024 terabytes
1.2.4 data storage
characters
sound
numbers
binary
denary
hexadecimal
images
pixels
1.2.5 compression
1.3 computer networks
paper 2