# A button

> Nintendo-style game controller action button

**Wikidata**: [Q136372925](https://www.wikidata.org/wiki/Q136372925)  
**Source**: https://4ort.xyz/entity/a-button

## Summary
The A button is the right-hand white action button on Nintendo-style game controllers, forming one of the four iconic face buttons (B/A/X/Y) that Nintendo popularized. It is a digital push-button classified as a Nintendo game controller button and a subclass of digital face buttons.

## Key Facts
- Positioned on the right side of the Nintendo-style face button cluster
- White-colored digital face button
- Stylized glyph: 𝐀
- Named after the Latin letter "A"
- Part of the Nintendo-style face buttons set (B/A/X/Y layout)
- Classified as both a Nintendo game controller button and a digital face button
- Differentiated from a generic "A button" by its Nintendo-specific styling and placement

## FAQs
### Q: Where is the A button located on a Nintendo controller?
A: The A button sits on the right side of the face button diamond, directly opposite the left-side B button in the standard B/A/X/Y layout.

### Q: Is the A button the same as any "A button" on other controllers?
A: No—this entry refers specifically to the Nintendo-style version; other platforms may use an "A button" but without Nintendo's exact glyph, color, or right-hand placement.

### Q: What color is the Nintendo A button?
A: It is white, matching the other face buttons in the Nintendo-style set.

## Why It Matters
The A button is the primary affirm-input on Nintendo hardware: every menu acceptance, jump in a platformer, or acceleration in a kart racer defaults to it. Because Nintendo's diamond layout became the de-facto reference for controller face buttons, the A button's right-hand position and letter-labeling influenced industry vocabulary—players simply say "press A" and expect the right-most button. Its consistent placement across Nintendo consoles from the SNES to the Switch creates muscle-memory continuity for millions of users, lowering the learning curve between hardware generations and cementing Nintendo's interface standards.

## Notable For
- Right-hand placement that established the "confirm/action" convention for Nintendo games
- Distinctive italicized 𝐀 glyph used across decades of Nintendo hardware
- Part of the symmetrical B/A/X/Y set that defined the modern face-button diamond
- Consistent white color scheme maintained across multiple console generations

## Body
### Physical Design
The A button is a white, circular digital push-button mounted on the controller's front shell. It uses a elastomer membrane or mechanical dome switch to register a binary pressed/released state. The cap is printed with an italicized 𝐀 that matches the font family used on the surrounding buttons.

### Layout Context
Within the Nintendo-style face button array, the A button occupies the right vertex of the diamond. Reading clockwise from the bottom, the order is B (bottom), A (right), X (top), Y (left). This arrangement first appeared on the Super Nintendo Entertainment System controller in 1990 and has persisted on every major Nintendo home and portable system since.

### Functional Role
Software treats the A button as the default affirmative action: selecting menu items, jumping, running, or advancing dialogue. Because the button sits directly under the right thumb in the standard grip, it is the most frequently actuated face button during gameplay.