How to Count in the Binary and Hexadecimal Numbering Systems

Did you know that there are other systems of numbering other than our standard decimal system?

The first numbering system was base 60.

The decimal system, or base 10, is in mathematics and everyday life, but computers and other electronics need to have simpler (sometimes more complex) systems. Enter, binary.

ok hex decimal is like real counting but it uses numbers and letters.
the numbers 1-20 using hex decimal:

1
2
3
4
5
6
7
8
9
a
b
c
d
e
f
10
11
12
13


as you can see it uses the letters a-f to repesent real numbers.
so every time you get to nine you go to a and so on. so 100 in hexdecimal is 64.
hex decimal is usely used in video games becauses you can fit big numbers in small space.

binary in the hardest to comprehend. it uses ones and zeros to repesent numbers. here are the numbers 1-20 in binary.

1
01
11
001
101
011
111
0001
1001
0101
1101
0011
1011
0111
1111
00001
10001
01001
11001
00101

all the ones and zeros repesent powers of 2. the first one = 1.the second one = 2. the third one = 4 , and so on and so on.
so 3 = 11 in binary. because 1+2 = 3

for somthing cool to do with binary code look here.

https://www.instructables.com/id/Binary-Marble-Clock/
https://www.instructables.com/id/Build-a-binary-heart-decoration-Blinkenheart/