Apple Mac computers have played a startup chime since the early Macintosh models, with the tone evolving over the years into the rich chord associated with the iMac line introduced in 1998. The sound was designed to reassure users that hardware diagnostics had passed and the system was ready. As Macs became cultural icons, recordings of the chime spread online in tech videos, parodies and soundboards. Its clean, futuristic feel keeps it popular for signaling power, innovation and a fresh digital start.