ISO basic Latin alphabet

The two sets contain the following 26 letters each:[1] By the 1960s it became apparent to the computer and telecommunications industries in the First World that a non-proprietary method of encoding characters was needed.

Later standards issued by the ISO, for example ISO/IEC 8859 (8-bit character encoding) and ISO/IEC 10646 (Unicode Latin), have continued to define the 26 × 2 letters of the English alphabet as the basic Latin script with extensions to handle other letters in other languages.

Two subheadings exist:[2] There are also another two sets in the Halfwidth and Fullwidth Forms block:[3] In ASCII the letters belong to the printable characters and in Unicode since version 1.0 they belong to the block "C0 Controls and Basic Latin".

In Spanish orthography, the letters ⟨n⟩ and ⟨ñ⟩ are distinct; the tilde is not considered a diacritic in this case.

Trigraphs: ⟨aai⟩, ⟨eeu⟩, ⟨oei⟩, ⟨ooi⟩ * Constructed languages The Roman (Latin) alphabet is commonly used for column numbering in a table or chart.