T9 Keyboard Emulator -

loadDictionary(words) words.forEach(word => const seq = this.wordToSequence(word); if (!this.dictionary[seq]) this.dictionary[seq] = []; this.dictionary[seq].push(word); );

}

Store common words mapped to their T9 sequences: t9 keyboard emulator

acceptWord() ''); this.currentSequence = ''; this.predictions = [];

# Example word dictionary t9_dict = '4663': ['good', 'home', 'gone'], '2273': ['case', 'care', 'base'], '96753': ['words', 'world'], '43556': ['hello'], '843': ['the', 'tie', 'vid'] loadDictionary(words) words

What is T9? T9 (Text on 9 keys) is a predictive text technology from the late 1990s/early 2000s that allowed users to type on mobile phones with 9 number keys (2-9). Each key maps to multiple letters, and T9 predicts the intended word based on key sequences. Key Mapping Key 2: ABC Key 3: DEF Key 4: GHI Key 5: JKL Key 6: MNO Key 7: PQRS Key 8: TUV Key 9: WXYZ Key 0: Space Key 1: Punctuation (varies by implementation) How to Build a T9 Emulator Step 1: Create the Letter-to-Key Mapping # Python example letter_to_key = 'a': '2', 'b': '2', 'c': '2', 'd': '3', 'e': '3', 'f': '3', 'g': '4', 'h': '4', 'i': '4', 'j': '5', 'k': '5', 'l': '5', 'm': '6', 'n': '6', 'o': '6', 'p': '7', 'q': '7', 'r': '7', 's': '7', 't': '8', 'u': '8', 'v': '8', 'w': '9', 'x': '9', 'y': '9', 'z': '9', ' ': '0'

This guide should give you everything needed to build a functional T9 keyboard emulator. Start with the basic version, then add features progressively! Key Mapping Key 2: ABC Key 3: DEF

def input_digit(self, digit): if digit == '0': # Space - finalize current word if self.current_input and self.current_input in self.word_dict: self.output_text += self.word_dict[self.current_input][0] + " " self.current_input = "" else: self.current_input += digit if self.current_input in self.word_dict: return self.word_dict[self.current_input] return []