Since “1” corresponds with “1”, it becomes a “1. " Since “2” corresponds with “1,” it becomes a “2. " Since “4” corresponds with “0,” it becomes “0. " Since “8” corresponds with “1”, it becomes “8,” and since “16” corresponds with “1” it becomes “16. " “32” corresponds with “0” and becomes “0” and “64” corresponds with “0” and therefore becomes “0” while “128” corresponds with “1” and becomes 128.

The “1” to the left of the decimal point is equal to 20, or 1. The 1 to the right of the decimal is equal to 2-1, or . 5. Add up 1 and . 5 and you get 1. 5, which is 1. 12 in decimal notation.