Question for the experts

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01:44:14

im fairly new to this stuff, what I want to know is why does the 7-seg display not stop at 9 and go up to f. and is there any way to make a count up clock that stops at 9 then carries the signal over? 

published 9 years ago

patrick91jh

9 years ago

So you want to convert hex to base 10? Since you're a beginner, this will be a great exercise for you to do. You will only need to add some digital logic between your counter and the bcds. The basic idea is that once 9 is true for the lower counter and the clock rises. You then reset your lower counter so it shows 0.

BillyT

9 years ago

The reason is that computers do not count in units of tens. The basic units are ones and zeros, and the same as you have ten, one hundred, one thousand, and so on in decimal, you have 1, 2, 4, 8, 16. In computer sequence. I enclose a circuit to change over at ten, EC has a timing glitch that doesn't allow a smooth change over. http://everycircuit.com/circuit/4703372190154752

sachinmc

9 years ago

U can by connecting b and d pin to an and gate and then its out put to resetpin

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