How to write a modular program in java

This isn’t really school related, but like where the heck can you find manga, to read to where you don’t have to pay money, for points? my friend wants me to read bj alex, and i can’t find it anywhere for free.

Digital information is stored using a series of ones and zeros. computers are digital machines because they can only read information as on or off –1 or 0. this method of computation is known as the system

The fourth generation of computers emerged between 1970s and 1980s. which technological advancement brought about this generation of computers? which computer architecture was used most in this generation?