The fourth generation of computers is more difficult to define than the other three generations 第四代计算机比其他三代更难以定义。
Computers built after 1972 are often called " fourth generation " computers , based on lsi ( large scale integration ) of circuits . later developments include vlsi ( very large scale integration ) 1972年以后的计算机习惯上被称为第四代计算机。基于大规模集成电路,及后来的超大规模集成电路。