© Neil Cameron 2021
N. CameronElectronics Projects with the ESP8266 and ESP32https://doi.org/10.1007/978-1-4842-6336-5_16

16. Signal generation

Neil Cameron1  
(1)
Edinburgh, UK
 
Telecommunication uses digital signals to transfer information. For example, the instruction Serial.print("12AB") transmits the ASCII code for each character (see Figure 16-1) in binary format with the microcontroller UART (Universal Asynchronous Receiver-Transmitter). ASCII (American Standard Code for Information Interchange) is an 8-bit character encoding standard for electronic communication, with the least significant bit (LSB) transmitted first. For example, the letter A has ASCII code of 65, which is B01000001 LSB or (1 × 26 + 1 × 20). The transmitted <S> and <T> bits ...

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