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7-Segment Display Need Help Immediately!! Please!!!

I can't figure out how I build this at all. I need so much help please! If anyone has any idea it would be great. I can't figure out how to make a keyboard on here or how to use the encoder and decoder correctly. Please help me.

 

Thank you much appreciated. 

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Hi,

 

I didn't look through the entire assignment but I suggest you look up the datasheet for the 74147 and 7447.

 

 

Tien P.

National Instruments
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