RAM vs ROM – What’s The REAL Difference?

                                        RAM

ROM

It stands for
Random Access Memory.

It stands for Read-Only
Memory

Ram data is volatile, that data can be present until power supply.

Rom data is non-volatile, data can be saved and present after power supply.

RAM stores data
temporarily.

RAM stores data
permanently.

Ram data can be
read, erased and modified

Rom data is readable only.

Ram stores data
that CPU needs for current instruction processing.

Rom stores data that
needed to bootstrap the computer.

CPU can directly
access data stored on RAM.

Data is copied from ROM to RAM so
that CPU can access data.

RAM is faster memory.

ROM is slower than RAM.

RAM is more
expensive

ROM is cheaper than RAM.

Types of RAM are:

1) DRAM

2) SRAM

Types of ROM are:

1)      PROM

2)      EPROM