I Have imported the correct libraries and still get an error.

Hi,

Go through the previous thread.

http://www.alteraforum.com/forum/showthread.php?t=1891

1. Adding 9 1-bit data (SEQIN) and displaying the result in a 3-bit (SmSwitches), You required to use VHDL concatenation operator (&) is used to put a 0 in front/back of each of the 9 1-bit numbers before adding them.

SmSwitches <= ("00"& SEQIN(1)+"00"& SEQIN(2)+"00"&SEQIN(3)+"00"&SEQIN(4)+"00"&SEQIN(5)+"00"&SEQIN(6)+"00"&SEQIN(7)+"00"&SEQIN(8)+"00"&SEQIN(9));

2. You can use numeric and unsigned library.

Let me know if this has helped resolve the issue you are facing or if you need any further assistance.

Best Regards,

Anand Raj Shankar

(This message was posted on behalf of Intel Corporation)