Microprocessors - Engineering

Q1:

When two ALU 1C 74181 are cascaded

A the carry out of first stage is connected to carry in of second stage

B the carry in of first stage connected to carry in of second stage

C the carry in of first stage is connected to carry out of second stage

D the carry out of first stage is connected to carry out of second stage

ANS:A - the carry out of first stage is connected to carry in of second stage

In cascading carry out of first stage is connected to carry in of second stage.