It also had use for binary coded decimal numbers as excess-3.
Add the values of every bit that is a 1 together to get the decimal number.
Thus the code 1101 converted into decimal number will be 13.
To see what these mean, remember how we dissected a decimal number.
Here is a worked out example for the decimal number 137:
The power gauge takes on values from 0 to 5, and decimal numbers in between.
The pupil can provide a decimal number which is between two given numbers in size (Example 88).
In doing this, she gave form to current decimal numbers.
Only the decimal numbers 0 to 99 can be added directly.
The "digits" were represented as decimal numbers from 0 to 31.