Generations of computers

Charles Babbage father of computer.

(1). 1822 - concept 

(2). 1837 - design 

 

(3). 1st Generation: (1940-1955 or 56)

(I). Switching device: Vaccum tubes

(II). Memory: Drum memory 

(III). Language used: Machine language (0,1) binary

(IV). Processing speed: 333 micro-seconds

(V). Use for: use for scientific purposes.

(4). 2nd Generation: (1956-1963)

(I). Switching device: Transistors

(II). Memory: Magnetic core memory 

(III). Language used: Assembly language ( low level language)

(IV). Processing speed: 30 Micro-seconds

(V). Use for: Industries and Companies.

(5). 3rd Generation: (1963-1971)

(I). Switching device: Integrated Circuits (I.C)

(II). Memory: Magnetic core as primary memory 

(III). Language used: High level language 

(IV). Processing speed: 100 nano-seconds

(V). Use for: Hospitals, Banks, Universities etc.

(6). 4th Generation: (1971-2010)

(I). Switching device: Large scale integrated Circuit 

(II). Memory: Semi-conductor memory 

(III). Language used: High level language 

(IV). Processing speed: 10 nano-seconds

(V). Use for: Hospitals, Banks, Universities, Schools, colleges etc.

[ 1971 Intel company Invented the Processor 4001].