History Of Computers PDF

HISTORY OF COMPUTER INTENDED LEARNING OUTCOME Realize the important contributions of the people in the area of computing  EVOLUTION OF COMPUTERS Pre-modern Era Manual-mechanical device - device powered by hand and physical effort....

HISTORY OF COMPUTER INTENDED LEARNING OUTCOME Realize the important contributions of the people in the area of computing  EVOLUTION OF COMPUTERS Pre-modern Era Manual-mechanical device - device powered by hand and physical effort. Electro-mechanical device - powered by electronic motors. Electronic devices - use only electrical switches and circuitry instead of mechanical relay. MANUAL-MECHANICAL abacus MANUAL-MECHANICAL napier’s bones MANUAL-MECHANICAL John Napier MANUAL-MECHANICAL oughtred’s slide rule MANUAL-MECHANICAL William oughtred MANUAL-MECHANICAL pascaline MANUAL-MECHANICAL Blaise Pascal MANUAL-MECHANICAL leibnitz calculator MANUAL-MECHANICAL Gottfried Leibnitz  MANUAL-MECHANICAL babbage’s difference and analytical engines MANUAL-MECHANICAL Charles Babbage ELCTRO-MECHANICAL DEVICES hollerith’s punch card machine ELCTRO-MECHANICAL DEVICES Herman Hollerith ELCTRO-MECHANICAL DEVICES automatic weaving loom ELCTRO-MECHANICAL DEVICES Joseph Marie Jacquard  ELCTRO-MECHANICAL DEVICES automatic sequence controlled calculator(MARK I) ELCTRO-MECHANICAL DEVICES Howard Aiken  ELECTRONIC DEVICES Atanasoff – Berry computer ELECTRONIC DEVICES John Atanasoff  ELECTRONIC DEVICES Electronic Numerical Integrator and Calculator ELECTRONIC DEVICES John Eckert ELECTRONIC DEVICES John Mauchly  ELECTRONIC DEVICES Electronic Discrete Variable Computer  ELECTRONIC DEVICES Electronic Delayed Storage Automatic Computer  GENERATION OF COMPUTERS First Generation Computers ( 1951 – 1958 ) Major Hardware Features: Vacuum tubes and magnetic drums Processing Speed: 1,000 instructions per second Size: Mainframes only Examples: Universal Automatic Computer (UNIVAC I ) – the first commercial business computer, developed by John Eckert and John Mauchly. IBM 701 – the first generation computer of IBM IBM 650 – the most popular generation compute  GENERATION OF COMPUTERS Second Generation Computers ( 1958 – 1963 ) Major Hardware Features: Transistors and magnetic core Processing Speed: 1,000,000 instructions per second Size: Mainframes only Examples: TRADIC – first transistorized computer UNIVAC II IBM 7070,7090 AND 1400 series  GENERATION OF COMPUTERS Third Generation Computers ( 1964 – 1971 ) Major Hardware Features: Integrated circuits or “chips” Processing Speed: 10,000,000 instructions per second Size: Mainframes only Examples: IBM System 360 – the most significant 3rd generation computer Burroughs B5500  GENERATION OF COMPUTERS Fourth Generation Computers ( 1971 – 1979 ) Major Hardware Features: Microprocessors or Large – second IC Processing Speed: 100,000,000 instructions per second Sized: Mainframes, Minicomputers, and Microcomputers Examples: Apple II; TRS 80 IBM System 360, System 3090 IBM PC – XT base computers IBM PC – AT base computers Motorolla 68030 based computers  GENERATION OF COMPUTERS Fifth Generation Computers ( 1980 - present ) Major Hardware Features: Circuitry based on gallium arsenide? Superconductors? Optical circuitry? Processing Speed? Visit our Canvas Module for the Activity Today