BCD Addition Calculator

[kritz]

Hi guys,
I'm a second year engineering student and I have to make a logic circuits project. I chose a BCD Adder and I have a circuit ready. The problem is that I need a way to give the input as since I am adding two 2-digit numbers, the number of input bits will be huge (16). Is there a way I could emulate a conventional calculator for punching in the input through a keyboard instead of having individual switches for each bit?
And just so I don't appear a TOTAL greenhorn, I haven't any idea of microprocessors or complex IC's beyond your gates and op-amps!!
Thanx

 

[anubhavbhardwaj]

dear friend,
hi,
as you i am  pre final year under graduate of engineering of electronics communication  as you have written i think that when you will read the VLSIin future you will perform htis in well manner but you can also perform it now by taking help of digital electronics book morris mano
using cobinational logic



your friend
anubhav

 

[kritz]

Thanx Anubhav,
Iam trying to find the book!!! ;D