- #1
david90
- 311
- 2
Is there an IC that ouput the input voltage in BCD? I want to make a voltmeter that can display the voltage in decimal number.
Click For Summary
Discussion Overview
The discussion revolves around the design of a voltmeter that can output voltage readings in Binary-Coded Decimal (BCD). Participants explore various integrated circuits (ICs) and methods for achieving this, including microcontrollers and ADC-BCD converters.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant inquires about an IC that can output input voltage in BCD for a voltmeter project.
- Another participant suggests using programmable microcontrollers like PICs or AVRs, or an ADC-BCD IC, mentioning that there are numerous methods available.
- A third participant shares a link to a specific resource that appears to meet their needs, indicating a lack of experience with micro programming.
- Questions arise regarding the multiplexing technique used in an A/D chip to power a 7-segment LED display, specifically how it prevents visible flickering.
- One participant confirms the effectiveness of multiplexing and emphasizes the importance of reading data sheets for understanding electronic components.
Areas of Agreement / Disagreement
Participants express varying preferences for different approaches, such as using microcontrollers versus dedicated ADC-BCD ICs. The discussion includes both agreement on the utility of certain methods and questions about specific technical implementations, indicating that multiple views remain without a clear consensus.
Contextual Notes
Some participants express uncertainty about specific technical details, such as the operation of multiplexing in LED displays, and there is a reliance on external resources for further information.
Who May Find This Useful
Individuals interested in electronics design, particularly those looking to create voltage measurement devices or learn about BCD output methods.
- #2
faust9
- 690
- 2
Yes, PICs, and AVRs can be programmed to output BCD with a given voltage input... Another option(s) would be a VCO to PIC frequency counter or (like your original question asked) an ADC-BCD IC. There are a miriad of methods available. Cruise by fairchild or dallas semiconductors and look through their products.
Here, Maxim has ADC to BDC near the top of the page: http://para.maxim-ic.com/ADConverters.htm
Personally, I'd use an Atmel micro or a Pic micro for a project like this. The design can be more versatile. You can switch to LCD, serial, or parallel if you feel so inclinde.
Good luck.
Here, Maxim has ADC to BDC near the top of the page: http://para.maxim-ic.com/ADConverters.htm
Personally, I'd use an Atmel micro or a Pic micro for a project like this. The design can be more versatile. You can switch to LCD, serial, or parallel if you feel so inclinde.
Good luck.
- #3
david90
- 311
- 2
I found this http://braincambre500.freeservers.com/ddv.htm
Just what I'm looking for. I haven't study micro programming yet so that is out of the quesiton.
Just what I'm looking for. I haven't study micro programming yet so that is out of the quesiton.
Last edited by a moderator:
- #4
david90
- 311
- 2
the a/d chip on that site uses multiplexing to power the 7 seg led. How does that work? THe chip turn the led on and off so fast that our eyes won't see the flickering?
- #5
faust9
- 690
- 2
david90 said:
Yes
Have you learned how to read the data sheets? If your going to explore electronics, reading data sheets is one of the most important things you can do. http://www.nteinc.com/specs/2000to2099/pdf/nte2054.pdf this tells all you need to know about using this particular chip.
Skip to the circuit description and all should become clear.
Well, good luck
Similar threads
- · Replies 22 ·
- · Replies 11 ·
- · Replies 1 ·
- · Replies 7 ·
- · Replies 6 ·
- · Replies 17 ·