The system serial number contains all or most of the following fields of information: *
Year： year of manufacture
Week： week of manufacture
Plant： manufacturing location
Product： type of system manufactured
Software ：Beginning in July 1997, systems manufactured with
Shop Floor Execution use C up to fff units/week and
D if more than fff units/week are built.
The Shop Floor System did not use this field.
Build number ：alphanumeric or hexadecimal build number
