Simple Explanation

A quick digital "hello" between two devices to make sure they can talk to each other correctly.

Concise Technical Definition

A communication protocol process where two devices exchange signals to establish readiness and compatibility before data transfer begins.

Layman-Friendly Analogy

Like two people shaking hands before a conversation to agree they’re both ready and understand the language.

Industry Usage Summary

Common in digital audio, HDMI, USB, and networking to negotiate formats, speeds, and readiness; failures in handshaking can cause no signal or data errors.

Engineering Shortcut

Initial device sync—"ready to send, ready to receive" protocol check.

Full Technical Explanation

Handshaking is a digital communication protocol used to establish and manage the connection between two devices before and during data transmission. It involves an exchange of control signals that confirm both ends are ready and compatible, often negotiating parameters such as data rate, format, or encryption. In audio and video systems, handshaking occurs in HDMI (to confirm format support), in USB devices (to negotiate data speed and power draw), and in network systems (during link establishment). Proper handshaking ensures error-free communication; failure can result in miscommunication or connection refusal.