Digital Graphics

Question 1

What is binary and how do you convert denary numbers into binary?

Answer 1

Binary is a number system that only uses two digits: 1 and 0
to convert denary to binary is to divide the number by 2 and mark down the remainder (1 or 0) and repeat it

Question 2

How do you convert from binary to denary?

Answer 2

To convert binary to denary Put the decimal values 128, 64, 32, 16, 8, 4, 2, 1 into a table row, Next, copy the binary number into the row below For each column with the binary value 1, add the corresponding denary value to get your result.

Question 3

How do you using binary describe how images are made up of pixels?

Answer 3

Each pixel in an image is made up of binary numbers. If we say that 1 is black (or on) and 0 is white (or off), then a simple black and white picture can be created using binary.

Question 4

What are Bitmap images?

Answer 4

A bitmap (also called “raster”) graphic is created from rows of different colored pixels that together form an image

Question 5

What are vector images?

Answer 5

A vector image is an image created using mathematical formulas to represent the image, rather than using a grid of pixels