TS 4435

TS 4435 is a terminology standard for data processing that organises the terms and definitions used in arithmetic and logic operations. Published as an equivalent of ISO 2382-2:1976, it helps establish a common vocabulary for numerical computation and logical decision-making, reducing ambiguity when the same concepts are described in different contexts.

Where arithmetic and logic meet in data processing

In general technical usage, arithmetic operations are the familiar numerical calculations such as addition, subtraction, multiplication and division. Logic operations, by contrast, work with binary values such as true/false or 1/0 and are central to comparison, control and decision processes. In computing, these two domains are closely related because a system often performs numerical work while also evaluating conditions and making logical choices.

What this vocabulary section covers

According to the supplied scope, this standard covers mathematical and logical terms, their definitions, and unary and binary Boolean operations. Conceptually, that means the terminology distinguishes whether an operation acts on one operand or two, and whether the operation belongs to arithmetic computation or Boolean logic. This distinction matters in programming languages, processor design, algorithms and technical documentation, where similar-looking symbols or words may carry different meanings.

• Unary operations act on a single operand.
• Binary operations act on two operands.
• Boolean operations operate on logical values and are commonly associated with AND, OR and NOT relationships.
• A terminology standard primarily standardises meaning and usage rather than prescribing a calculation method.

As part of the broader information technology vocabulary, this standard supports consistent communication in software development, systems engineering, education and translation work. It is especially useful where precise terminology is needed to describe how data is processed and how logical results are produced.