How is the transmission of a single character differentiated from the transmission of the next character in asynchronous transmission?

In asynchronous transmission, the transmission of a single character is differentiated from the next character by the use of start and stop bits. When a character is sent, a start bit is transmitted first, signaling the beginning of the character. Following the data bits of the character, one or more stop bits are sent to indicate the end of the character, allowing the receiving device to recognize when one character ends and the next begins. This framing ensures that characters are accurately received even without a continuous clock signal.