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Particleboard with veneer. Particle board, also known as particleboard or chipboard, is an engineered wood product, belonging to the wood-based panels, manufactured from wood chips and a synthetic, mostly formaldehyde based resin or other suitable binder, which is pressed under a hot press, batch- or continuous- type, and produced. [1]
In 1958, Jack Kilby at Texas Instruments invented the hybrid integrated circuit (hybrid IC), [1] which had external wire connections, making it difficult to mass-produce. [2] In 1959, Robert Noyce at Fairchild Semiconductor invented the monolithic integrated circuit (IC) chip. [3] [2] It was made of silicon, whereas Kilby's chip was made of ...
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Another early version of the clipboard, known as the "memorandum file", was invented by American inventor George Henry Hohnsbeen in 1921, for which he was granted U.S. patent 1,398,591. [2] Related to the clipboard is the Shannon Arch File, which was developed around 1877.
It revolutionized the electronics industry, [19] [20] becoming the most widely used electronic device in the world. [21] [22] The MOSFET is the basic element in most modern electronic equipment. [23] [24] As the complexity of circuits grew, problems arose. [25] One problem was the size of the circuit. A complex circuit like a computer was ...
The term "cardboard" has general use in English and French, [1] [2] but the term cardboard is deprecated in commerce and industry as not adequately defining a specific product. [3] Material producers, container manufacturers, [ 4 ] packaging engineers , [ 5 ] and standards organizations , [ 6 ] use more specific terminology.
The earliest known tool for use in computation is the Sumerian abacus, and it was thought to have been invented in Babylon c. 2700 –2300 BC. Its original style of usage was by lines drawn in sand with pebbles. [citation needed] In c. 1050 –771 BC, the south-pointing chariot was invented in ancient China.
The Austrian engineer Paul Eisler invented the printed circuit as part of a radio set while working in the UK around 1936. In 1941 a multi-layer printed circuit was used in German magnetic influence naval mines. Around 1943 the United States began to use the technology on a large scale to make proximity fuzes for use in World War II. [6]