Im assuming the binary counter component in ktechlab should resemble a 4510? One thing I noticed after rigging up a clock (555, binary counter, bcd to 7 seg, 7 seg) was that it started couting 0-9 a-f, which is hex if i recall correctly and since its only a single digit. The datasheet on a 4510 has a carry bit... what should i do? I am just learning electronics so please help. Thanks