Personalized health review for Total Cereal, Whole Grain: 100 calories, nutrition grade (B plus), problematic ingredients, and more. Learn the good & bad for 250,000+ products.
18.1 Introduction to UARTS. UARTs (U niversal A synchronous R eceiver T ransmitter) are serial chips on your PC motherboard (or on an internal modem card). The UART function may also be done on a chip that does other things as well. On older computers like many 486's, the chips were on the disk IO controller card.
Along with converting between serial and parallel, the UART does some other things as a byproduct (side effect) of its primary task. The voltage used to represent bits is also converted (changed). Extra bits (called start and stop bits) are added to each byte before it is transmitted.