Electronic signals convey information through electrical patterns known as analog and digital signals. Analog signals use continuously varying strength or frequency while digital signals encode information as strings of 1s and 0s. Electronic devices are built using semiconductors like transistors and diodes, and integrated circuits which contain many tiny transistors on a single silicon chip. Common devices that use electronics and integrated circuits include computers, televisions, microwaves, radios, and more.

1. Ch 20-4 Electronic Devices