<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
How do I convert decimal numbers to binary numbers and vice versa?<|im_end|>
<|im_start|>assistant
There are a number of methods that can be used to convert decimal numbers to binary and vice versa. One method that is easy to do with pen and paper is to perform Euclidean division (division with remainder) on your number by 2 repeatedly while collecting remainder terms. To use this method first perform Euclidean division on your number by 2, then write down the integer answer (called the quotient) and the left over term that will either be 0 or 1 (called the remainder). Then repeat the Euclidean division by 2 on the quotient from the previous step until the quotient is zero, writing down the remainder in each step. The binary number will then be your written down remainders but in reverse order.

An example for converting 6 into a binary number is.

1. 6/2 -> quotient = 3, remainder = 0
2. 3/2 ->  quotient = 1, remainder = 1
3. 1/2 ->  quotient = 0, remainder = 1

The binary number is then read in reverse order, therefore the binary form of the decimal number 6 is 110.

There are also a number of methods to convert a binary number to a decimal number. One easy method uses the position of each digit in the binary number. To convert a binary number to a decimal number using the digit positions first write down each position of the binary number from right to left order and starting from 0. For every position with a 1 in the binary number, calculate 2 to the power of its position. Adding together all the calculated powers of 2 will then give you the correct decimal representation of the binary number.

An example of converting the binary number 110 back into the decimal for is.

1. The positions of each digit in the binary number is 2 for the first digit 1, 1 for the second digit 1 and 0 for the last digit 0.
2. The powers of 2 for the first and second position are 2^2=4 and 2^1=2 respectively.
3. Adding the previously calculated powers of 2 together gives  4 + 2 = 6.

Giving the expected answer that the decimal for of 110 is 6.<|im_end|>
<|im_start|>user
Wow, thank you bud!<|im_end|>
<|im_start|>assistant
You're welcome! Let me know if you have other questions.<|im_end|>
<|im_start|>user
Could you write a small program that does that?<|im_end|>
<|im_start|>assistant
In Julia, converting the base of a number, such as between binary and decimal, is simple: 

Decimal to binary:
```julia
n=string(n, base=2)
```
Or, with a recursive function as answer above step by step:
```julia
function decToBin(n)
    if n > 0
        decToBin(n ÷ 2)
        print("$(n % 2)")
    end
end
```
Binary to decimal:
```julia
n=Int("0bxxxx") #replace the x's with your binary number
```<|im_end|>