| Subject | English | Irish |
| comp., MS | Microsoft Disk Operating System | Córas Oibriúcháin Dioscaí Microsoft (A Microsoft computer operating system with a command-line interface that is used to control many internal computer functions, such as running programs and organizing and maintaining files) |
| comp. | mobile operating system | córas oibriúcháin móibíleach |
| gen. | mobile operating system | OS móibíleach |
| comp., MS | MS-DOS operating system | córas oibriúcháin MS-DOS (A Microsoft computer operating system with a command-line interface that is used to control many internal computer functions, such as running programs and organizing and maintaining files) |
| comp., MS | operating system | córas oibriúcháin (The software that controls the allocation and usage of hardware resources such as memory, central processing unit (CPU) time, disk space, and peripheral devices. The operating system is the foundation on which programs are built) |
| comp., MS | operating system | córas oibriúcháin (The software that controls the allocation and usage of hardware resources such as memory, central processing unit (CPU) time, disk space, and peripheral devices. The operating system is the foundation on which programs are built) |