# Have a homework problem i need help on 7483 IC's

Discussion in 'Homework Help' started by Geoffr67, Mar 2, 2012.

1. ### Geoffr67 Thread Starter Member

Dec 5, 2011
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0
hello on one of my homework assignments i have about 10 problems where i must demonstrate a solution to a problem.I am going to post one of the questions in hopes someone could demonstrate how it is done so i may complete the remaining problems by myself. Im just a little confused here.

1.Show how to Cascade two 7483 IC's to add two 8bit numbers together. Clearly identify which chip handles the LSN&MSN (Nibble)

What is the sum and carry for 59h+3Dh ?

on the diagram show where to place 59h and 3Dh on the ic's to support this addition.

Could someone help me out on this one? it would be GREATLY appreciated.
G

2. ### Georacer Moderator

Nov 25, 2009
5,142
1,266
Let's see. You have two 8-bit numbers that you want to add and two 4-bit binary adder ICs.

Don't be perplexed by the "hex" nature of your input. Hex numbers are still binary with a digit grouping.

Any thoughts? Make an effort for yourself first, if you please.

3. ### Geoffr67 Thread Starter Member

Dec 5, 2011
69
0
Well given i have 2 of these IC's i would convery each hex number to binary and decimal so i know what bits to place on each pin of each IC, I would label each IC A and B On A i would place the binary equivelent of 59h (89d) on the corrosponding pins,and the same for IC B 3Dh (61d). My question really is how would i connect 2 of these Ic's together pin wise to support this addition. this i am not sure of.

4. ### Georacer Moderator

Nov 25, 2009
5,142
1,266
Ok, for starters leave the decimal system out of the conversation. Your input isn't in decimal, your ICs work with binary and no one asks you to have the output in decimal. So just forget about it. Work exclusively in binary.