generation of computer

The history of computer development is often referred to in reference to the different generation of computing devices. The first, generation computers used vacuum tubes for circuit and machine drums for memory and were often enormous, taking up entire rooms. Transistors replaced vacuum tubes and ushered in the second generation computers. The microprocessor brought the forth generation in computers as thousand of integrated circuit were built into a single silicon chip. Fifth generation computing devices based on artificial intelligence are still in development though there are some applications such as voice recognition that are being used today.