Week 3: Introduction about computers

After IM, i have learnt about computers." Computer is a programmable machine/device that carries out what it has been instructed to do." Nowadays, a lot of  people have to use computers every day for their work or study. Because of its practical benefit. I also use computer most of the time, such as face-booking, watching movie, listening music and so on. However, i hadn't known about it clearly until i have been taught about it at my IT class. I have been added more knowledge about computer on that day, such as: about evolution of computers. There are 5 generations of computer :

1. First generation (1940-1950): Vacuum tube.
2. Second generation (1950-1964): Transistor.
3. Third generation (1964-1974): Integrated circuits (IC).
4. Fourth generation (1974-present): VLSI/ULSI.
5. Fifth generation (Now-Future):