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Welcome to the Real World

Welcome to the Real World. What to do ?. Input from the mangonel sensors Input expected by the software. How to do ?. Input arrives from sensors Logic circuit combines and inverts inputs to create a single pulse

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Welcome to the Real World

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  1. Welcome to the Real World

  2. What to do ? • Input from the mangonel sensors • Input expected by the software

  3. How to do ? • Input arrives from sensors • Logic circuit combines and inverts inputs to create a single pulse • PICAXE measures the pulse duration and outputs the value to seven segment displays

  4. NAND gate Input A Output Input B

  5. AND NOT Basic Logic functions (gates): OR

  6. JK Flip-flop

  7. Pulse width meter circuit diagram

  8. Model on a breadboard(find TTL or “Transistor–transistor logic” in wikipedia )

  9. Work for today No connection DOT means wire connection

  10. Identifying a microchip 1 9 10 18

  11. Tips and tricks: • Be tidy: Keep the wires short. This improves reliability. • Wire Colours does not affect the performance a circuit, but does affect the performance of a person trying to understand it. • Connected wires are marked with a dot. • Remember about the power supply. • Do not forget to connect • Do not forget to switch OFF when making changes.

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