Dda

DDA is an acronym that can refer to several distinct concepts across different fields. This article outlines some of the most common uses.

Digital Differential Analyzer (DDA) is a line-generation algorithm used in computer graphics to rasterize straight lines. It works by incrementally calculating intermediate points along a line with fixed-step increments and selecting pixel positions based on the line’s slope. The method is simple and historically important, though it has been largely superseded by more advanced rasterization techniques in modern graphics systems.

Demand Deposit Account (DDA) is a type of bank account from which funds can be withdrawn on demand. This category includes checking accounts and certain business deposit accounts. Terms and access methods vary by jurisdiction and institution, but the defining feature is immediate liquidity, enabling withdrawals, transfers, and other transactions as needed.

Direct Debit Authorization (DDA) is a customer-approved mandate that allows a merchant or service provider to collect payments directly from a customer’s bank account on specified dates. The authorization typically specifies the amount, frequency, and account details, and is commonly used for recurring bills, subscriptions, and other regular payments. Proper authorization and compliance with banking regulations are essential.

In other contexts, DDA can have additional meanings tied to specific industries or organizations. The intended meaning usually becomes clear through context, such as accompanying terminology or the field of reference.