LCD/LED display solution problem

  • Thread starter Thread starter LaVic
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To display numeric information from a 16-bit binary coded decimal stream, using a binary to BCD converter followed by a 7-segment LCD driver is recommended. Integrated modules like the HDSP series are available but can be costly, often exceeding $30 for single units. Building a custom solution with a decoder IC, driver IC, and display can be more economical, potentially costing around $5, excluding prototyping materials. While LCDs are an option, a 7-segment display is suggested as a more cost-effective choice for this application. Overall, exploring DIY solutions can enhance learning and reduce expenses.
LaVic
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Hello,

I have a problem. I want to be able to display the numeric information contained in a stream of 16 binary coded decimal bits (in parallel) using either a LCD or LED display. Would you know of any drivers, displays or display modules that would allow me to do that ? Any feedback would be appreciated. Thank You.


Christoph:bugeye:
 
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Use a binary to BCD converter, followed a 7-sement LCD driver. There are many such possibilities.

- Warren
 
chroot said:
Use a binary to BCD converter, followed a 7-sement LCD driver. There are many such possibilities.

- Warren
Or you can buy a module like this one from Digikey, where the decoder and display are integrated together. Kinda' pricey, though.

http://rocky.digikey.com/scripts/ProductInfo.dll?Site=US&V=516&M=HDSP-0772
 
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If you are more interested in learning how its done.
Then try for a diode matrix.
 
Thank you all, for your responses. i will try to focus on finding an LCD display module that could take in 16 lines of binary info directly. The HDSP series seems to be very promising. How much do they cost ?
 
LaVic said:
Thank you all, for your responses. i will try to focus on finding an LCD display module that could take in 16 lines of binary info directly. The HDSP series seems to be very promising. How much do they cost ?
They're pretty expensive -- you pay a lot for the convenience of the integration. I think the one I posted a pointer to is north of $30 in singles.

I agree with NoTime and chroot -- you will learn a lot more building your own out of a decoder IC, a driver IC, and a display. You can probably build it for around $5, not including the cost of buying a reusable plug-breadboard for prototyping (which you should buy anyway, so you can easily prototype circuits as you learn). Like these from Digikey:

http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter
 
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Recommend 7-segment

I think 16 bit BCD is just 4 digit of decimal numbers. Using LCD is waste of your money. I recommend the 7-segment. If you really want to known more on how to use lcd module, please see:

http://freewebs.com/80x51/articles/lcd.html
 
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