Credit Card Numbers - Visa. These Credit card numbers validate for Visa credit cards. The number and information is as real as it can be, and contains valid bin information. The structure of the credit card number starts with a valid bin number and also validates against the LUHN's formula.
UART is a protocol (Universal asynchronous receiver/transmitter ) for serial transfer of information. You ask about an embedded system with mentioning which so I'll assume that you have a block diagram with one indicating UART.
A urinalysis (UA) is a set of tests that detect cells, cell fragments, and substances such as crystals or casts in the urine. It may be used as part of a health exam or when a person has symptoms, and results can help detect a urinary tract infection, kidney disorder, liver problem, diabetes or other metabolic condition.