Why Numeric Terminal Digit Filing?
This style of indexing is used where files are created sequentially, but are stored in accordance to the last two digits of the number. This is done because in a sequential system, all new files are placed at the end of the filing system. Culled files are being removed from the beginning causing congestion at the end and holes at the beginning. A Terminal Digit System is set up by dividing the available filing space into one hundred, equally sized sections, numbered from 00 – 99. Files are placed into these boxes according to the last two digits of the file number and filed numerically within that box according to the hundred and then the thousand.
