1. Telegraph Code   James Watt   Samuel Morse   Orville and Wilbur Wright   Charles Macintosh   Hint Half-n-half Clue   2. Vulcanised Rubber   John Logie Baird   John Boyd Dunlop   Charles Goodyear   Alfred B. Nobel   Half-n-half Clue   3. Telephone   Alfred B. Nobel   Benjamin Franklin   Orville and Wilbur Wright   Sir Alexander Graham Bell   Half-n-half Clue   4. Television (mechanical)   Rudolf Diesel   Charles Goodyear   John Logie Baird   Sir Alexander Graham Bell   Half-n-half Clue   5. Transformer   James Watt   Michael Faraday   Sir Alexander Graham Bell   John Boyd Dunlop   Half-n-half Clue   6. Movie Projector   Rudolf Diesel   Thomas Alva Edison   Charles Macintosh   John Boyd Dunlop   Half-n-half Clue   7. Microphone   Thomas Alva Edison   Benjamin Franklin   Sir Alexander Graham Bell   Fahrenheit   Half-n-half Clue