ROM is a memory chip which has its programming embedded in the chip at manufacture.
It is known as firmware - because it has it's hardware and software in one.
Because the data in a ROM chip is embedded in the manufacture - the data is permanent and secure.
ROM is also non volatile so data is stored when the power is turned off.
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RAM
RAM stands for Random Access Memory.
RAM is a place in a computer where the operating system, applications and data in use are stored to be reached by the computers processor.
The more RAM there is, the faster the computer works.
RAM grants space for the computer to read and write things to be used by the Central Processing Unit.
RAM is volatile - once the computer has been turned off RAM is no longer stored. When the computer is turned on again - data semi-permanently in ROM is sent back to RAM.
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