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The AEC had 3 model 701 machines, the Weather Bureau had one model 701.

IBM had orders for 14 model 702s at a monthly rental of $20,000, and had delivered 19 of the earlier model 701. It was the result of IBM slogan "Think" and Tom Watson, Jr., who took over presidency of IBM in 1952, and who led the battle to automate American business. Louis, called "the giant brain." It had 2,500 tubes, did 7,200 logical operations per sec., with punch card and magnetic tape storage. IBM had just installed a model 702 Electronic Data Processing Machine in its Monsanto HQ in St. Vacuum tubes, magnetic drums, punched cards, paper tapes and printouts Machine language Computation time in milliseconds Enormous in size For scientific applications ExamplesUNIVersal Automatic Computer (UNIVAC) Electronic Numerical Integrator And Calculator (ENIAC) Electronic Discrete Variable Automatic Computer (EDVAC)Chapter-1: Introduction to Computerįirst Generation: 1940-56Time magazine ran the cover story "The Brain Builders" on Tom Watson, Jr., and IBM on March 28, 1955. Speed Accuracy Diligence Storage capability VersatilityĬalculating machines ABACUS Napiers Bone Slide Rule Pascals Adding and Subtraction Machine Leibnizs Multiplication and Dividing Machine Punch card system Babbages Analytical Engine Holleriths punched card tabulating machineĮvolution of computer to the current state Five generations Categorized on the basis ofTechnology used by them (hardware and software) Computing characteristics (speed - number of instructions executed per second) Physical appearance Their applicationsįifth Present and Next Artificial Intelligence

Two categoriesDigital ComputerAnalog Computer What is a Computer Characteristics of Computer History of Computer Generations of Computer Classification of Computers Computer System Input-Process-Output Concept Components of Computer Hardware Application of ComputersĬomputer is an electronic device that accepts data as input, processes the input data by performing mathematical and logical operations on it, and gives the desired output.