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    Mini Air Cooling Fan overall appearance

    Date: 2015-4-24   Click: 1355 Times

     "Mini Air Cooling Fan" status display
        Show fan speed control system in working condition, the state has three are low speed, medium speed and high speed state, the system LED indication for demonstration.
    "Mini Air Cooling Fan" LED display
        Three common anode seven segment LED tubes were used in this system are displayed, the current temperature and set the timer countdown time. Standard temperature in degrees Celsius. Time in minutes. Digital single-chip parallel data output port P0, P2 port scan control data display, digital tube triode 8550 to do the driving.
    "Mini Air Cooling Fan" keyboard control
    There are a set of keyboard control countdown temperature settings plus and minus. Another group of control system is in three states, namely the state of the corresponding low-speed, medium-speed state and a high speed, the light emitting diode to indicate the system for demonstration. There is a switch button control system is in automatic mode and manual mode switch.

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