Answer

Internal Memory :-

• It is also known as primary storage or main storage.
• It is volatile in nature in case of RAM but ROM is non-volatile.
• It is used to store data temporarily in case of RAM.
• It stores data when power supply is on otherwise it removes data when power supply goes.
• Internal memory is working memory.
• Examples are RAM and ROM.

External Memory :-

• It is also known as secondary memory or secondary storage.
• It is non-volatile in nature.
• They are used to store data permanently.
• It stores data when power supply is on after that it saves data.
• External memory is not working memory.
• Examples are hard disk, pen drive etc.