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9 Cards in this Set
- Front
- Back
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Def of serial access |
to start of the begging of the file and then access each record in turn the required record is found |
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What is direct access |
the computer uses key field to calculate where data should be stored |
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What is secondary storage devices |
Devices which ensure that data is primarily stored so that can be used later |
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Def of magnetic storage media |
Magnetic stogarge media uses magnetic properties to save data |
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Uses HDD |
To store operating systems Application software |
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Adv of HDD |
Store large memory capacities 2) very fast data transfer |
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Adv of HDD |
Store large memory capacities 2) very fast data transfer |
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Disadvantages of HDD |
1) easily damaged 2) very slow data access time |
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What’s optical storage data |
Used to store using laser light to read and write data |
