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  The Willams tube was the first RAM invented. It was invented by Professor Williams and his colleagues.
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  The EDSAC was a stored program computer used to store memory. The memory was stored using a mercury delay line.
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  The hard disc was used to store and retrive bits of digital information.
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  The music tape is used to play and record music. It was also used for distributing prerecorded music.
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  The DRAM was used to increase overall memory storage in computers.
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  The Cd was used to play music
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  The Digital data storage tape (DSS) was used to store and backup computer data on a magnetic tape.
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  The flash drive is often seen in Digital cameras to store digital information.
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  The Smartmedia was a flash memory card used to store data.
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  The DVD was another form of data storage a disc. It can be used to play videos.
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  The USB stick can store information and backup data.
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  The Sd card was invented and used for faster file transfers
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  The Blu-ray disc is a disc that is better than normal DVDs