ttd Keyboard

A keyboard layout for math and science.

Introduction

This keyboard layout is non-intrusive, so you can install it and keep it on. After installing the keyboard layout, enabling it in your system settings, and switching to it, you’ll be able to access the primary layout (see below) by holding down Right-Alt on Windows, or Control ⌃ + Option ⌥ on Mac. You’ll be able to access the secondary layout by holding down Shift + Right-Alt on Windows, or Shift ⇧ + Control ⌃ + Option ⌥ on Mac.

Primary layout

Windows: Right-Alt + …
Mac: Control ⌃ + Option ⌥ + …

• ` → minus sign (−)
• numbers → subscript numbers (₁, ₂, ₃, etc.)
• – → subscript minus (₋)
• = → subscript plus (₊)
• q → square root (√)
• other letters → lowercase Greek letters (α, β, γ, etc.)
• [ → left arrow (←)
• ] → right arrow (→)
• \ → two-way arrow (⇌)
• ; → en dash (–)
• ' → em dash (—)
• , → multiplication sign (×)
• . → middle dot (∙)
• / → division sign (÷)
• space → hair space ( )

Secondary layout

Windows: Shift + Right-Alt + …
Mac: Shift ⇧ + Control ⌃ + Option ⌥ + …

• ` → angle (∠)
• numbers → superscript numbers (¹, ², ³, etc.)
• – → superscript minus (⁻)
• = → superscript plus (⁺)
• q → equation modifier (┴)
• w → equation modifier (┬)
• other letters → uppercase Greek letters (Α, Β, Γ, etc.)
• [ → minus-plus (∓)
• ] → plus-minus (±)
• \ → integral (∫)
• ; → degrees (°)
• ' → approximately (≈)
• , → less than or equal to (≤)
• . → greater than or equal to (≥)
• / → not equal to (≠)
• space → full-width space (　)

Dead keys

Subscript numbers 1–9 (Windows: Right-Alt + number, Mac: Control ⌃ + Option ⌥ + number) double as dead keys. When typed before {A, E, I, O, U, V, N, M, a, e, i, o, u, v, n, m} (where V and v represent Ü and ü, respectively) the letter will be produced with the corresponding diacritic:

1. Macron (ā)
2. Acute accent (á)
3. Caron (ǎ)
4. Grave accent (à)
5. Dot above (ȧ)
6. Circumflex (â)
7. Vertical line above (a̍)
8. Tilde (ã)
9. Special
   • Vv → Üü (Uu with umlaut)
   • Nn → ᴺⁿ (superscript Nn)
   • o → ◌͘ (combining dot above right)

A dead key can also be followed by a hyphen (-) to produce a combining diacritic or an equals sign (=) to produce a non-combining diacritic. The original subscript number is produced by following the key with a space.

Platform-specific notes

Windows: Due to technical limitations, the following characters cannot be produced directly using dead keys. Instead, it is necessary to type the character and follow it with the appropriate combining diacritic.

1. Macron (ā): N̄, M̄, n̄, m̄
2. Acute accent (á): none
3. Caron (ǎ): M̌, m̌
4. Grave accent (à): M̀, m̀
5. Dot above (ȧ): U̇, Ü̇, u̇, ü̇
6. Circumflex (â): Ü̂, N̂, M̂, ü̂, n̂, m̂
7. Vertical line above (a̍): A̍, E̍, I̍, O̍, U̍, Ü̍, N̍, M̍, a̍, e̍, i̍, o̍, u̍, ü̍, n̍, m̍
8. Tilde ã: Ü̃, M̃, ü̃, m̃
9. Special: none

Mac: To install for the current user only, copy the .bundle to ~/Library/Keyboard Layouts.

Copyright © 2013–2017 Kevin Hsieh. All Rights Reserved.