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Pin Wheel Calculator
This Pinwheel calculator was invented by Antonius Braun in 1727, Germany. His machine, which he presented to the emperor in 1727, was cylindrical in shape and was made of steel, silver and brass; it was finely decorated and looked like a renaissance table clock. It could perform all four operations. Calculators are an essential program in computers today. This pinwheel calculator is one of the first calculators created after Pascaline. -
Z3 Computer
Z3 Computer-(Konrad Zuse in Munich)It is finished in late 1943, it is an electromechanical computer and world’s first working programmable, auomatic computing machine. -
Grace Hopper
Grace Hopper, a United States Navy Officer is one of the first women to contribute to computer programming language. She has contributed to machine-independent programming languages, which led to the development of COBOL, one of the first modern programming languages. -
Transistor
German physicists Herbert Mataré and Heinrich Welker created a transistor. A transistor is a semiconductor device used to switch electronic signals. It is composed of semiconductor material with at least three terminals for connection to an external circuit. The transistor plays the most vital part of modern electronic devices. Following its development in the early 1950s the transistor revolutionized the field of electronics, and paved the way for smaller and cheaper radios, -
IBM's 701 Computer
IBM’s 701 computer-(Jhon Presper Eckert & Jhon W Mauchly) in 1951: First commercial scientific computer and defense calculator.It was due to in part to the Korean War effort. Inventor wanted to contribute what he called a 'defense calculator' to aid in the UN's policing of Korea -
Mouse
Mouse-(Douglas Engelbart in America)It is invented 1964,it is functioning as pointing device that functions by detecting two dimensional motion.This contributed to the creation of mouse used today. -
Motherboard
Motherboard-(Micronics,Mylex,AMI,DTK companies )It was found during 1980s,it is the central circuit board computer and contains all the circuits and components such as CPU,BIOS etc. This is the most important device in computer hardware. -
Vinton Gray
Vinton Gray(Vint Cerf)- he is a American computer scientist1968, recognized as ‘the father of Internet’ Cerf interested in the field of computer networking and set up another program at UCLA
He led the engineering of MVI Mail, the first commercial email service to be connected to the Internet -
Abacus
The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes. Today, abaci are often constructed as a bamboo frame with beads sliding on wires, but originally they were beans or stones moved in grooves in sand or on tablets of wood, stone, or metal. The abacus was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere.
