1
00:00:00,650 --> 00:00:07,850
So to reiterate a decimal value of zero equates to a hexadecimal value of zero decimal value of one

2
00:00:07,850 --> 00:00:16,690
equates to a hexadecimal value of 1 2 is 2 3 is 3 and so forth and so on until you get to 9.

3
00:00:16,730 --> 00:00:25,730
So 9 in decimal equates to 9 in hexadecimal a decimal value of 10 equates to a hexadecimal value of

4
00:00:25,790 --> 00:00:36,390
a decimal 11 is hexadecimal B 12 13 14 is e 15.

5
00:00:36,530 --> 00:00:39,160
F that's what you need to remember.

6
00:00:39,530 --> 00:00:42,150
So doing a more complex example once again.

7
00:00:42,760 --> 00:00:45,770
What about 2 to 4 in decimal.

8
00:00:45,770 --> 00:00:51,200
That equates to 1 1 1 0 in binary.

9
00:00:51,380 --> 00:00:58,880
If you're not sure use a Windows calculator to help you or refer back to my binary and decimal conversions

10
00:00:59,000 --> 00:01:01,580
to work out these values.

11
00:01:01,580 --> 00:01:08,920
So two to four in decimal equates to that in binary.

12
00:01:09,110 --> 00:01:16,540
If we split it in half the secrets to zero in decimal or zero in hexadecimal and this equates to a zero

13
00:01:16,720 --> 00:01:21,340
a to a four and an 8 in binary.

14
00:01:21,410 --> 00:01:30,590
So eight plus four was 12 plus two's 14 plus 0 is 14 14 and hexadecimal equates to e in hexadecimal.

15
00:01:30,650 --> 00:01:34,400
So this is the zero in hexadecimal.

16
00:01:34,400 --> 00:01:41,730
So two to four in decimal equates to zero in hexadecimal Stewy another example.

17
00:01:41,780 --> 00:01:44,690
What about 240 so 240.

18
00:01:44,840 --> 00:01:46,280
Looks like this.

19
00:01:46,400 --> 00:01:49,910
In binary these are Windows calculator.

20
00:01:50,000 --> 00:01:59,300
So to 4 0 in decimal equates to a binary value of the following.

21
00:01:59,330 --> 00:02:06,090
So break it into this equates to zero in decimal and zero in hexadecimal.

22
00:02:06,110 --> 00:02:11,550
This equates to 15 in decimal or if in hexadecimal.

23
00:02:11,570 --> 00:02:16,050
Convert that to hexadecimal and you get the value of f is 0.

24
00:02:16,400 --> 00:02:23,980
So two to four equals zero in hexadecimal 240 equals zero in hexadecimal.

25
00:02:25,430 --> 00:02:33,170
Getting back to our previous example of 255 255 equals eight binary ones split in two.

26
00:02:33,320 --> 00:02:45,800
That gives you 15 in decimal or F F in hexadecimal so 255 255 255 255 gives you 8 hexadecimal F's.

27
00:02:45,870 --> 00:02:49,430
So what about a IP address such as 10.

28
00:02:49,440 --> 00:02:53,500
Doc wondered wondered one what is that in hexadecimal.

29
00:02:53,820 --> 00:03:01,910
So 10 in binary and let's fill in the leading zeros would look like this.

30
00:03:02,650 --> 00:03:05,200
One would look like this.

31
00:03:06,180 --> 00:03:13,070
And you would repeat that for the third and fourth octet so converting to hexadecimal.

32
00:03:13,070 --> 00:03:19,660
Break these into 4 binary bits 0 is 0 in hexadecimal.

33
00:03:19,900 --> 00:03:21,070
That is 10.

34
00:03:21,190 --> 00:03:22,750
So it's an A.

35
00:03:22,750 --> 00:03:25,170
This is a 0 and this is a 1.

36
00:03:25,450 --> 00:03:32,950
So that's a fairly simple example of how to convert a value like this into the hexadecimal equivalent

37
00:03:33,190 --> 00:03:37,020
valleys Let's take another example.

38
00:03:38,100 --> 00:03:43,140
What about 3:58 don't one to two or three.

39
00:03:43,230 --> 00:03:56,850
So to do for Looks like this in binary one looks like this too looks like this entry looks like this.

40
00:03:56,880 --> 00:04:10,030
So that equates to eight plus four plus two which is 14 14 in hexadecimal is e 0 in hexadecimal is a

41
00:04:10,040 --> 00:04:11,610
zero.

42
00:04:11,620 --> 00:04:15,720
This is fairly easy once again that's a 0 and a 1 in hexadecimal.

43
00:04:15,940 --> 00:04:25,930
This is 0 2 in hexadecimal and this breaking it up into four binary bets is 0 3 in hexadecimal.

44
00:04:26,830 --> 00:04:34,990
The trick to remember is that decimal values are 0 2 9 equivalent to hexadecimal values zero to nine

45
00:04:35,950 --> 00:04:43,270
decimal values 10 to 15 or equivalent to hexadecimal values 8 to f.

46
00:04:43,520 --> 00:04:48,360
The largest single hexadecimal value is an F and that's four binary ones.

47
00:04:48,470 --> 00:04:59,090
So you need to convert any IP address number such as 240 into two portions of 4 binary bits and then

48
00:04:59,630 --> 00:05:04,170
work out the hexadecimal for each for binary bit value.

49
00:05:04,580 --> 00:05:14,740
So this is F and this is a zero and you can see that using a calculator is 240 in decimal equals zero

50
00:05:15,190 --> 00:05:16,580
in hexadecimal.

51
00:05:16,720 --> 00:05:17,650
As we worked out.