A "smiley face" is a simple graphic representation of a smiling human face, typically depicted as a yellow circle with two black dots for eyes and a curved line for a mouth. It is often used to convey happiness or positivity in various forms of communication, including text messages, emails, and social media. The smiley face was popularized in the 1960s by graphic artist Harvey Ball, who created the iconic design for a promotional campaign. Since then, it has become a universal symbol of joy and friendliness, appearing in countless products, advertisements, and digital platforms.