| Subject | English | Welsh |
| comp., MS | action button | botwm gweithredu (A ready-made button that the user can insert into his/her presentation and define hyperlinks for) |
| comp., MS | button face | wyneb botwm (The surface of a button where text or an image (typically indicating the button's function) may be displayed) |
| comp., MS | command button | botwm gorchymyn (A standard Windows control that initiates a command) |
| comp., MS | default button | botwm diofyn (In some dialog boxes, the command button that is selected or highlighted when the dialog box is initially displayed. The default button has a bold border, indicating that it will be chosen automatically if you press ENTER. You can override a default button by clicking Cancel or another command button) |
| comp., MS | field button | botwm maes (A button that identifies a field in a PivotTable or PivotChart report. You can drag the field buttons to change the layout of the report, or click the arrows next to the buttons to change the level of detail displayed in the report) |
| comp., MS | left mouse button | botwm chwith llygoden (The button on your pointing device that you use most often for clicking and double-clicking) |
| comp., MS | menu button | botwm dewislen (A command button that is clicked to display a drop-down menu instead of performing a command) |
| comp., MS | Microsoft Office Button | Botwm Microsoft Office (A button that replaces the File menu beginning with some 2007 Microsoft Office system programs) |
| comp., MS | mouse button | botwm llygoden (A movable piece on a device that is pressed to activate some function) |
| comp., MS | Office Button | Botwm Office (A button that replaces the File menu beginning with some 2007 Microsoft Office system programs) |
| comp., MS | option button | botwm dewis (A standard Windows control that allows a user to select from a fixed set of mutually exclusive choices) |
| comp., MS | picture button | botwm llun (A control in a form that consists of an actionable image. At run time the user can click the image to run rules or actions similar to a button) |
| comp., MS | primary mouse button | prif fotwm y llygoden (The button on your pointing device that you use most often for clicking and double-clicking) |
| comp., MS | push button | botwm pwyso (A standard Windows control that initiates a command) |
| comp., MS | push-button reset | botwm ailosod (The ability to easily return a PC to a prior state, either by reinstalling Windows and keeping their files or by resetting the PC to the original factory state) |
| comp., MS | radio button | botwm radio (A standard Windows control that allows a user to select from a fixed set of mutually exclusive choices) |
| comp., MS | right mouse button | botwm de llygoden (The button on your pointing device that you use to display shortcut menus or other program-specific features) |
| comp., MS | rotation lock button | botwm cloi cylchdro (The button or slider on tablets and convertible tablets that rotates the display) |
| comp., MS | scroll arrow button | botwm saeth sgrolio (A component of a scroll bar that allows the information to be scrolled by defined increments when the user clicks it. The direction of the arrow indicates the direction in which the information scrolls) |
| comp., MS | Search button | botwm Chwilio (The button next to a search box that someone clicks to search for something) |
| comp., MS | split button | botwm hollti (A drop-down button that performs a default action and can also expand to a list of other possible actions) |
| comp., MS | Start button | botwm Cychwyn (The round button in the lower left-hand corner of the Windows screen that allows the user to click and display the Start menu) |
| comp., MS | taskbar button | botwm bar tasgau (A button that represents an item or program that is open and running on your computer. For example, if you open Microsoft Word, and then minimize it, it will be displayed as a taskbar button, which you can then click when you want to maximize it) |
| comp., MS | toggle button | botwm toglo (" A button control within a graphical user interface that when clicked remains "down" (appearing to be pressed) until it is clicked again. It can display either text or a picture, and can be standalone or part of an option group.") |
| comp., MS | toolbar button | botwm bar offer (A command button used in a toolbar (or status bar)) |
| comp., MS | volume control button | botwm rheoli sain (A hardware button that increases and decreases the sound volume) |
| comp., MS | Windows button | Botwm Windows (A tablet hardware button with the Windows logo on it that's similar to the Windows key on a keyboard. Pressing the Power and Windows buttons simultaneously is the equivalent of pressing Ctrl+Alt+Del) |