View Full Version : LCD/LED display problem


Truenemo1889
09-04-06, 09:44 AM
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.

MetaKron
09-04-06, 11:33 AM
For an LED display, a BCD to 7 segment decoder will work if you can find them. For an LCD display, you are far better off using a microcontroller to do the counting and to operate the display.

Click here for datasheets (http://www.ee.washington.edu/stores/DataSheets/74ls/74ls47.pdf)

74LS47 7 segment decoder (http://webtronics.stores.yahoo.net/ls47.html)

4511 CMOS 7 segment decoder (http://webtronics.stores.yahoo.net/74hc4511.html)

Before ordering make sure that you know whether the chip is for common anode or common cathode displays and whether that matches the displays that you plan to use. One can be used with the other if you invert all the lines. The 7447 is open collector so you have to use pullup resistors before any inverters.