This is a low cost 4-digit Up/Down counter. Count range is from 0000, 1, 2 … to 9999 (counting up) or 0000, 9999, 9998, …. 0001 (counting down). The Overflow output pulses low when the count wraps around to zero. This output allows two counters to be connected together to make an 8 digit counter. A 9 to 15V DC supply is required to power the kit, which has a current consumption of 20mA to 40mA, depending on the number displayed.
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