Tagged Questions

2
votes
1answer
1k views

How does this carry look ahead block work?

This is a carry look ahead adder : This adder is known to calculate one or more carry bits before the sum. From the figure we see that carry look ahead block calculates the carry C1,C2,C3,C4 . But ...
4
votes
5answers
2k views

Designing a 4-bit ALU to compute various functions

I've been working on designing an ALU that calculates various functions but I don't really know how to separate each function from one another. The inputs are 4-bit numbers A and B. I have a decoder ...
3
votes
1answer
498 views

Help with a simple two bit Arithmatic Logic Unit?

I'm creating a 2-bit alu. It has 8 defined functions (the functions are defined by a 3bit code), AND XOR etc, and these functions act on two, 2-bit binary numbers and produce a 2-bit answer. From ...