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How to Type Symbols Using the ALT Key

On Windows

Type the currency symbol. Hold down the key Altand type the following numbers using the numeric keypad on the keyboard. When you release the key Alt, the symbol will appear. The NumLock key must be enabled.

 Symbol  Name  Code 
€ Euro 0128
£ GBP 156
¢ US Cent 155
¥ Yen 157
ƒ Florin 159
¤  Currency  0164

Type mathematical symbols. Hold down the key Altand type the following numbers using the numeric keypad on the keyboard to insert mathematical symbols. When you release the key Alt, the symbol will appear. The NumLock key must be enabled.

 Symbol  Name  Code 
÷ Division sign 246
× Multiply 0215
± Add or subtract 0177
≈ Approximately 247
√ Radical sign 251
ⁿ Power to the n power 252
² Square 253
¼ A quarter 0188
½ Half 0189
¾ Three fourths 0190
∞ Infinity 236
≥  Greater than or equal to  242
≤ Less than or equal 243
π Pi 227
° Degree 248

Type special punctuation and editing symbols. Hold down the key Altand type the following numbers using the numeric keypad on the keyboard to create special punctuation marks. When you release the key Alt, the symbol will appear. The NumLock key must be enabled.

 Symbol  Name  Code 
¡  Inverted exclamation mark  173
¿ Inverted question mark 168
§ Chapter 21
Paragraph 20
© Copyright 0169
® Registered 0174
™ Tradenames 0153
† Cross 0134
‡ Double cross 0135
– Short dash 0150
— Long dash 0151
• Bullet point 0149

Type musical notation. Hold down the key Altand type the following numbers using the numeric keypad on the keyboard. When you release the key Alt, the symbol will appear. The NumLock key must be enabled for combinations to take effect. Symbols with codes from 9000 to 9999 are not valid everywhere but also depend on certain fonts.

 Symbol  Name  Code 
♪ Quarter note 13
♫ Single note 14
♬  Double hook note  9836
♭ Flat sign 9837
♮ Normal sign 9838
♯ Hashtag 9839

Type other miscellaneous symbols. Hold down the key Altand type the following numbers using the numeric keypad. When you release the key Alt, the symbol will appear. The NumLock key must be enabled.

 Symbol  Name  Code 
☺ Smile first
☻  Black smiley face  2
♥ Military engine 3
♦ Diamonds 4
♣ Shrimp army 5
♠ Spades 6
♂ male 11
♀ Female twelfth
↑ Arrow up 24
↓ Down arrow 25
→ Right arrow 26
← Left arrow 27
☼ Sun 15
⌂ House 127

On Mac

Type currency symbols. When you press the ⌥ Optor ⇧ Shift+ key ⌥ Opt, the keyboard generates different symbols, including common currencies. Use the following keyboard shortcuts to type currency symbols.

 Symbol  Name Shortcut
¢ US Cent ⌥ Opt+4
€ Euro  ⇧ Shift+ ⌥ Opt+2 
£  GBP  ⌥ Opt+3
¥ Yen ⌥ Opt+Y
ƒ Florin ⌥ Opt+F

Type other symbols. Use the key combination ⌥ Optor ⇧ Shift+ ⌥ Opton the keyboard to edit mathematical operations. Use the key combinations below to type various mathematical symbols.

 Symbol  Name Shortcut
÷ Division ⌥ Opt+/
± Add or subtract  ⇧ Shift+ ⌥ Opt+= 
° Degree ⇧ Shift+ ⌥ Opt+8
≥  Greater than or equal to  ⌥ Opt+>
≤ Less than or equal ⌥ Opt+<
π Pi ⌥ Opt+P
≈ Approximately ⌥ Opt+X
≠ Not equal ⌥ Opt+=
∞ Infinity ⌥ Opt+5
∫ Integral ⌥ Opt+B

Gõ các dấu câu đặc biệt và những ký hiệu soạn thảo. Những phím bổ sung ⌥ Opt và ⇧ Shift+⌥ Opt sẽ thay đổi những ký tự mà bạn phím tạo ra. Một trong những ký tự kết hợp này là dấu câu và các ký hiệu soạn thảo. Áp dụng những tổ hợp phím bên dưới để gõ các ký tự sau.

 Symbol  Name Shortcut
¿ Dấu hỏi ngược  ⇧ Shift+⌥ Opt+? 
¡  Dấu chấm thang ngược  ⌥ Opt+1
© Quyền tác giả ⌥ Opt+G
® Đã đăng ký ⌥ Opt+R
™ Tên thương mại ⌥ Opt+2
Đoạn ⌥ Opt+7
§ Chương ⌥ Opt+6
• Chấm đầu dòng ⌥ Opt+8
– Dấu gạch ngang ngắn ⌥ Opt+-
— Dấu gạch ngang dài ⇧ Shift+⌥ Opt+-
† Thánh giá ⌥ Opt+T
‡ Thánh giá đôi ⇧ Shift+⌥ Opt+7

Mở Symbol Viewer (Trình xem Ký tự) để tìm ra nhiều ký tự hơn. Máy tính Mac không có nhiều mã như máy tính Windows, nhưng bạn có thể tìm ra nhiều ký tự khác nhau trong Symbol Viewer:

Nhấp vào bảng chọn Apple và chọn "System Preferences" (Tùy chỉnh Hệ thống).

Nhấp vào tùy chọn "Keyboard" (Bàn phím) và tích vào "Show viewers for keyboard, emoji, and symbols in menu bar" (Hiển thị trình xem cho bàn phím, biểu tượng cảm xúc và ký hiệu trong thanh thực đơn).

Nhấp vào biểu tượng trình xem hiển thị trong thanh thực đơn và chọn "Show Emoji & Symbols" (Hiển thị Biểu tượng cảm xúc và Ký hiệu).

Duyệt tìm qua các danh mục biểu tượng và nhấp đúp vào ký hiệu mà bạn muốn chèn.

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