How to convert from Quaternary to Binary?

Question

Number systems

1231 in quaternary to binary with explanation

Answer 1

In this case (4 is a power of two), you can replace each character with its binary (two-bit) representation:
0 -> 00
1 -> 01
2 -> 10
3 -> 11
We get 01101101. Zero in the high order can be discarded.