Arnorin DB9 Gender Changer Serial RS232 Male to Male Mini Adapter/Coupler Pack of 2

hello welcome to all i am sachin sambaji patty i welcome to aloppy for this session so in this session we are going to see the serial communication standards once again welcome to all of you for this session so what are the serial communication standards so basically cellular communications on standards which are there so that is the rs 232 rs-232 it is a serene port used in most of the computer in most of the computer this rs232 cell photo system rs 232 it is a 25 pin d connector out of these 22 pins are used only so out of this 20 what are the pins are there total pins are there that is the 25 but out of that 22 pins are used so out of them 22 pins are used only so remaining three pins are not required for normal pc connection so remaining three pins are not required for normal pc connection so db25 connector and db9 connector so there are two kinds of connector one is a rs232 tb 25 a