The CDBM CDBC is a 5-stage divide-by John- son counter with 10 decoded outputs and a carry out bit. The CDBM CDBC is a 4-stage. Data sheet acquired from Harris Semiconductor. SCHSC − Revised February The CDB and CDB types are supplied in. CDBCN IC COUNTER/DIVIDER DECADE DIP Fairchild Semiconductor datasheet pdf data sheet FREE from Datasheet (data sheet).

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National Semiconductor

Meanwhile, the kids can keep sending more and more soldiers off to war, each dying at the end of the string. Do you already have an account? Each transistor is tied to the negative lead of 10 LED’s each. When the first chases the second one holds output 0 high.

CD4017BCN Datasheet

But you’d be limited to 9 outputs on the first, and up to 10 transistors to complete up to a 90 LED string of a chase light. The second moves from output 0 to 1, turning off the first transistor and turning on the second.


Seems a comet tail was mentioned so here is a simple tested version for either or SR like 74HC Nov 23, 8, 6, I think I’m beginning to settle down on a plan.

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Am I reading this code correct? The LED used were a disappointment as viewing angle is about 30 deg. Embedded Systems and Microcontrollers. Your name or email address: One to send highs 1’s and one to set low’s 2’s.

If so, and the kids hold the button down a long time there could be cd40177bcn endless stream of lit lights. The next question is what to do with the 10 74HC’s I have arriving tomorrow. That’s bringing up a problem: Posted by transgalactic in forum: I am desperate for this Inductor Posted by Dynaman in forum: If all the lights are lit at once, my power supply won’t be strong enough to power that many devices.

When the first completes the count, on the next clock pulse the first sends a “Carry Out” signal which acts like a clock input to the second. The choice now is whether to go with the 74HC’s or to order some SR’s. You would probably also have to use the master reset with output 9.


No need for any gates.

Aug 7, 4, What’s inside of one? Plus, what I really like about the push button idea is that the kids can send any datxsheet of lights up that they want.

CDBCN Datasheet(PDF) – Fairchild Semiconductor

There is probably a cd4017cbn to use the last output from the first counter to act like a carry out. Sounds like good advice.

Am Dqtasheet reading this voltage tester wrong? Yes, my password is: Oct 25, This “Carry Out” command can be used as a clock input for the second.

I’ll have to investigate that further. The first commands the chase. When the Ninth output goes high the 10th LED is lit.