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    System Designs
    Solution 1:
    INPUTSPROCESSOUTPUTS
    Microphone:
    Specified to pick up loud sharp sounds i.e. Clapping.    		 Using a monostable the signal from the microphone is converted to a digital signal, which is sent to a pic that has light sequence programs depending on the amount of claps. LED�s that flash depending on the program sequence of the pic, which light the fibre optic cables in the tree.
    Solution 2:
    INPUTSPROCESSOUTPUTS
    Microphone:
    Specified to pick up loud sharp sounds i.e. Clapping.    		Using a logic system and a pic combined to create different light sequences depending on what switch is pushed. Different coloured bulbs that flash depending on what sequence is selected.
    Reason For Selection:
    I have decided to design and make solution 1. Using a sound responsive device means the Christmas tree will be easier to change for the user, as the light sequence can be changed anywhere in the room. Using a logic system and pic program in combination in solution 2 is unnecessarily complex for the system. LED�s are a more power efficient output compared to bulbs therefore increasing battery life. Solution 1 is easier and cheaper to make and fulfils my design brief.

    Contents | Research | System Designs | Design Specification | Input Sub-System | Process Sub-System | Output Sub-System | Final Circuit Design | Evaluation | The Project

    Created By Adrian Townsend
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