| Home | Terms of Use | Site Map | Contact Us |
IndustryCommunity.com > Electrical and Electronic Community > Analog Circuit Design Forum > Message
Main Menu
Find

[ List Subjects ][ Main Page ]
[ View Followups ][ Post Followup ]

Subject: Re: I need schematic for clock - please help please!

Date: 02/23/03 at 8:08 AM
Posted by: Russ Kincaid
E-mail: russlk@netzero.com
Message Posted:

In Reply to: Re: I need schematic for clock - please help please! posted by sicminds on 02/22/03 at 10:48 PM:

You will need a BCD counter. One way to do that is divide by two and divide by 5. Look up 7490 for an idea.

Switching the input signal will start & stop the clock but you may want to insure that the switch time occurs when the signal is zero.

The 7447 bcd to 7-segmant decoder will drive the display. You have to look up the data sheets for these devices and figure out to use them, I cannot do that for you.


Follow Ups:


Post a Follow-up:

Name:
E-Mail:
Subject:

Message to Post:

 

1999-2001 Sunlit Technology Co., Ltd. All rights reserved.