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The circuitry of the hydrocolloid-based smart bandage made use of two ICs: NE555P timer from Texas Instrument and 74LS393 dual 4-bit binary counter from Fairchild. Two 10 MΩ resistors and a 220 nF capacitor were also used for a successful operation of the timer. This circuit was powered by a 5 V from E3648A DC power supply by Agilent. This can be potentially replaced by a disc or flexible battery for easy integration and portability.

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