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Can someone tell me the past and obsolete storage

 
proong
Occasional Contributor

Can someone tell me the past and obsolete storage

Internal memory is an important integral part of computer system to store data that is need for computer's operation. In the old days, how they used the obsolete storage to store data, like fluorescent lamp and bulbs, glassdiode and cylinder transistors. Can someone tell me what is flourescent lamp, and how it work? what are different and drawback ? Thank you.