This is how you count to 15 in hex.
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Looks pretty weird huh? Well believe it or not those letters are numbers in hex!
A=10
B=11
C=12
D=13
E=14
F=15
Since there are more digits before you overlap numbers that look like decimal numbers are actually
much higher.For example:
10 in hex = 16 in decimal
Lets count to 20 in decimal then count to 20 in hex.
1
2
3
4
5
6
7
8
9
10
11
1213 14 15 16 17 18 19 20 
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
12
13
14

I'm sure there are some differences you notice very quickly. The reason the numbers after F look like 10 to 14 is because the 1 tells how many 16's there are and the number after shows how many 1's there are.
This time were going to count to 20 in hex then were going to count to 20 in binary.
Binary and hex are related in a way can you see it? (If you can't the answers at the bottom of the page.)
The reason we use hex is because computers think in binary and if they showed numbers in binary there would be so many 1's and 0's it would take forever to figure out what the number was. So we abstract binary digits into hex digits to make it easier to show the numbers. 1 hex number = 4 binary digits which =1 nibble. So the way to convert binary numbers into hex is simple.
1011 1010 0111 1111 1110 1100
D A 7 F E C
Answer: Binary and hex are related because both of them add an extra digit when they get to 16 because they both overlap at 16.
This time were going to count to 20 in hex then were going to count to 20 in binary.
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
12
13
14

0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
10000
10001
10010
10011
10100

Binary and hex are related in a way can you see it? (If you can't the answers at the bottom of the page.)
The reason we use hex is because computers think in binary and if they showed numbers in binary there would be so many 1's and 0's it would take forever to figure out what the number was. So we abstract binary digits into hex digits to make it easier to show the numbers. 1 hex number = 4 binary digits which =1 nibble. So the way to convert binary numbers into hex is simple.
1011 1010 0111 1111 1110 1100
D A 7 F E C
Answer: Binary and hex are related because both of them add an extra digit when they get to 16 because they both overlap at 16.
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