CAT THEORY SA GRADE 11 COMPLETE QUESTIONS AND ANSWERS FROM THE 2ND EDITIONS TEST BOOK LIFE GRADE 11

1. Name two input devices which can be used to input images into the
computer.
✔✔1. Scanner and digital camera
2. What would you say are the three main advantages of digital cameras,
other than any cost-related issues?
✔✔2. They allow one you to take hundreds or thousands of photos
(depending on the size of your memory card).
You can see the images immediately (and delete those you don't want).
You can easily transfer the images you want to edit to a computer
because they are already in digital format
3. Explain what a pixel is and its relationship to the quality and physical
size of a digital image.
✔✔3. Pixels form the basis of a digital image and are the small dot-like
elements that make up the image. The more pixels that are used to form
the image, the better the quality of the image and the more space it will
physically take to store the image and vice versa.
4. Describe one way in which you could transfer photographs from your
digital camera to your laptop computer without making use of a USB
cable.
✔✔4. You can take out the memory card and insert it into the laptop
either directly (if it has slot for it) or by using a card reader device
connected to the laptop, or you can transfer them wirelessly.