A position on defense commonly in the defensive backfield. The strong safety plays in the middle of the field on the strong side of the formation, closer to the line of scrimmage than the free safety. The strong safety is more involved in stopping the run and guarding the tight end on passing plays. The strong safety tends to be the larger of the two safeties, and he must be a sure tackler with solid cover skills.
From Wikipedia, the free encyclopedia. A check digit is a form of redundancy check used for error detection on identification numbers, such as bank account numbers, which are used in an application where they will at least sometimes be input manually. It is analogous to a binary parity bit used to check for errors in computer-generated data.
upc type a upc a upc a symbols consist of 11 data digits and one check digit the first digit is a number system digit that normally represents the type of product being identified the following 5 digits are a manufacturers code and the next 5 digits are used to identify a specific productpc type e upc e upc e is a smaller seven digit upc symbology for number system 0 it is often used for small retail items for upc e barcodes you normally specify 6 digits and let your barcode printing software calculate the seventh check digit for you