Ans. :- The fourth generation of computers :
1. They are smaller, energy efficient and more reliable than the earliar generation of computers.
2. They are extremely powerful and can process millions of instructions in a fraction of seconds.
3. In 1981, IBM introduced its first computer for the home users.
4. In 1984, Apple introduced the macintosh.
5. Examples : IBM 4341, DEC 10, STAR 1000 and PUP 11.