| Subject | English | Welsh |
| comp., MS | base calendar | calendr sylfaenol (A template that can be used as a project and task calendar to specify default working and nonworking time for a set of resources) |
| comp., MS | base character | nod sail (A character that has meaning independent of other characters, or any graphical character that is not a diacritical mark) |
| comp., MS | Base Smart Card Cryptographic Service Provider | Darparwr Gwasanaeth Cryptograffeg Base Smart Card (The basic software module for by smart cards that performs cryptography and includes algorithms for authentication, encoding, and encryption) |
| comp., MS | Base Smart Card CSP | DGC Smart Card Sylfaen (The basic software module for by smart cards that performs cryptography and includes algorithms for authentication, encoding, and encryption) |
| comp., MS | base style | arddull sylfaenol (The underlying or original style on which other styles in a document are dependent. When you change a formatting element of the base style in a document, all other styles that originate from the base style will also reflect the change) |
| comp., MS | base view identifier | dynodwr gwedd sylfaen (An integer that uniquely identifies a view definition for a list) |
| comp., MS | hyperlink base | sylfaen hyperddolen (When a relative link is based on a path you specify (the first part of the path that is shared by the file containing the hyperlink and the destination file), that path is the hyperlink base) |
| comp., MS | knowledge base | cronfa wybodaeth (A searchable collection of articles and facts about a particular subject area) |
| comp., MS | Knowledge Base | Sylfaen Wybodaeth (A Microsoft Web site that provides customers with access to a database of articles written by Microsoft Support professionals) |
| comp., MS | Microsoft Knowledge Base | Cronfa Wybodaeth Microsoft (A Microsoft Web site that provides customers with access to a database of articles written by Microsoft Support professionals) |