computer history and genaration

FIRST GENERATION (1940~1946) :  VACUUM TUBES FOR CIRCUITRY AND MAGNETIC

DRUMS FOR MEMORY, ITS VERY EXPENSIVE TO OPERATE AND USING A LOT OF ELECTRICITY.

SECOND GENERATION (1956~1963) :  TRANSISTORS, IT WAS INVENTED IN 1947 BUT DID NOT BECOME FAMOUS UNTIL 1950'S. IT ALLOW COMPUTER TO BECOME MUCH FASTER AND CHEAPER BUT STILL RELIED ON PUNCHED CARD FOR INPUT AND PRINTOUT OUTPUT.

THIRD GENERATION (1964~1971) : INTEGRATED CIRCUITS, IT WAS MINIATURIZED AND PLACED ON SILICON CHIP CALLED SEMICONDUCTORS. INTERACTED THROUGH KEYBOARDS AND MONITORS AND INTERFACED WITH AN OPERATING SYSTEM THAT ALLOW DIFFERENT APPLICATION AT ONE TIME WITH A CENTRAL PROGRAM. ITS WAS SMALLER AND CHEAPER THAN THEIR PREDECESSORS.

FOURTH GENERATION ( 1971~PRESENT) : MICROPROCESSOR, THOUSAND OF INTEGRATED CIRCUITS WERE BUILT ONTO A SINGLE SILICON CHIP. ALL OF THE COMPONENTS FROM THE CENTRAL PROCESSING UNIT TO OUTPUT/INPUT CONTROLS ON A SINGLE CHIP.

FIFTH GENERATION (PRESENT AND BEYOND) : ARTIFICIAL INTELLIGENCE, IT IS STILL IN DEVELOPMENT, ITS GOAL IS TO DEVELOP DEVICES THAT RESPOND TO NATURAL LANGUAGE INPUT AND CAPABLE OF LEARNING AND SELF-ORGANIZATION.