How many Ports are there in 8255?

(a)  

List the names of the Ports?

(a)  

What is the size of the Port A?

(a)  

Ports are divided into how many groups?

(a)  

What are the names of the groups?

(a)  

How many signals does group A and B has?

(a)  

Give Examples for PPI interface

(a)