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Is the Operating System installed on device 4 proprietary software or open source software?

Peripherals are 

Right click on the button below and open the Design Story-board in a new Tab. It was created for the problem. There are two errors in it. Explain what these are and how you would correct them.  

Name two important points to bear in mind in the Test phase.

Give two guidelines for using your computer so that you do not suffer from any injuries or discomfort.

  AFDELING E – DATAHANTERING  

A visually impaired user wants to use the computer, name two ways in which you could make the computer easier for him to use.

  VRAAG 6.1     Watter soort grafiek word in die bostaande prent gebruik? (1)

  VRAAG 4.7     Watter vorm in die bostaande prent het geen lyne van simmetrie nie? (1)

The next five questions are about the following scenario: A small Coffee Kiosk sells 5 different types of coffees. There is one till which registers sales and whether the sale was paid for by cash or by card. The Kiosk is open 12 hours a day.