General computer knowledge

 
Explain the following terms: formatting (a hard drive or USB stick), dragging, defragment, podcast, vodcast, scam (give examples), phishing, urban legend (give examples), Facebook, cloud computing. Please write around 3-5 lines for each definition.

2. Can you retrieve a file that you inadvertently erase? What could you do to salvage it? Describe two methods.

3. Distinguish between notebook, netbook, smartphone, tablet and desktop computers. Paste images of each in your answer.

4. Explain ASCII, ERP, HTML, XBRL, MYOB, Quickbooks, SAP. Please write around 5 lines for each definition.

5. In a spreadsheet why replace cell references with names? Paste an example of a formula using names rather than cell references.

6. What is the difference between a relative and an absolute cell reference?

7. What was Visicalc? Why is it important in the history of computers?
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