Mình không phải "anh chị" nha
1. 4BUT + LED7 + KEYPAD -> ALARM CLOCK
2. 4BUT + LCD + KEYPAD -> ALARM CLOCK
3. KEYPAD + LCD -> CALCULATOR
4. KEYPAD + LCD -> MESSAGING
5. KEYPAD + MATRIX LED -> DISPLAY CHARACTER, NUMBER
6. 4BUT + MATRIX LED + LED 7 -> SPOT MOVING GAME
7. 4BUT + LCD + LED7 -> SPOT MOVING GAME
8. KEYPAD + MATRIX LED -> EFFECTS
Nhóm nào bài nào thì mình không nhớ :P