shvet1 Posted February 15, 2005 Report Share Posted February 15, 2005 I am trying to create a formal lab for future use taht involves step by step testing of certain ic chips and diodes. my question to anyone with the knowledge involves knowledge of the 7447 bcd decoder. in the first part of the lab a 4 bit binary counter is shown. the first step is to figure out how to find the pin assignments on a comman anode 7-segement display (this has been done) the next step is to test the 7447 decoder by giving it a binary inpout 0 to 9 (so any input from 0000 to 1001) in order to get the 7 segement display to display the number inputed to the display. i have asked a few people how this can be done and i have looked it up online and i cannot find anything to help me. thanks to whoever has the knowledge and those that do not thank you for reading this post which is SO much longer than the others. Quote Link to comment Share on other sites More sharing options...
trigger Posted February 16, 2005 Report Share Posted February 16, 2005 You can use dip switch ( in this case 4 channels) at the input ports with resistors as current protection. Quote Link to comment Share on other sites More sharing options...
shvet1 Posted April 12, 2005 Author Report Share Posted April 12, 2005 thanks for your help Quote Link to comment Share on other sites More sharing options...
Kevin Weddle Posted April 21, 2005 Report Share Posted April 21, 2005 What is funny is that you can take 10 seperate LCD circuits for the numbers one through ten and select which one goes to the LCD. A cascaded array of data selectors can be used. Quote Link to comment Share on other sites More sharing options...
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