Hexadecimal Conversion

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Presentation transcript:

Hexadecimal Conversion Lesson 5

What is Hexadecimal? Represents binary digits 16 base system Used in computing and maths One hexadecimal digit represents a nibble, which is half of an octet.

Example 16 base-system Always starts off at 0 as this is a value! Used in computing as FF for example could represent data better than use of binary. Ease of use for computer is essential!

Example cont As you can see, the system works by you add 1 onto the decimal figure and continue from the last hex number ie 0-9, it is 10 and the last one 15, is 16 in decimal. Then, the decimal continue until you reach the next ten data set , then a 1 is added onto the hex.

Activity Draw this in on a word document and complete. Hint: Work out what we just looked at and see if you can work out the set after I displayed on the board!

Answer Note this down as it will help you with hexadecimal conversion!

Videos!! Watch the following videos and see if they help you to do the following..... https://www.youtube.com/watch?v=jFnXpMt6H_Y https://www.youtube.com/watch?v=ES6CRT0_U2g

Exam Question from last year! This is easy!!!! AS 6 is in the 16s column, we times 6x 16 =96 WE then add 10 as A in hex is 10 so it would be 96 +10 = 106

Exam Question from last year! WE take the A away and convert to Binary. We know A=10 in hex so lets do this below 8 4 2 1

Exam Question from last year! NOW we work out the 6. Again 6x16 = 96 128 64 32 16 8 4 2 1 0 1 1 0 1 0 1 0

Exam Question from last year! Have a go at this ones yourself!!! We will go through the answers later on.