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A combination between a whiteboard and a cork bulletin board Original early 1960s ad for "Plasti-slate", the first whiteboard/dry erase board invented by Martin Heit. Photographer Martin Heit and Alliance employee Albert Stallion have been credited with the invention of the whiteboard. [1] [2]
An interactive whiteboard (IWB) device can either be a standalone computer or a large, functioning touchpad for computers to use. Interactive whiteboards are widely used in classrooms, boardrooms, and training environments, providing an innovative way to share information, facilitate discussions, and enhance the overall learning or business communication experience.
Stick-slip effect with a chalk on a blackboard. Chalk sticks are produced in white and in various colours, especially for use with blackboards. White chalk sticks are made mainly from calcium carbonate derived from mineral chalk or limestone, while coloured chalk sticks are made from calcium sulphate in its dihydrate form, CaSO 4 ·2H 2 O, derived from gypsum.
The A-0 high-level compiler is invented by Grace Murray Hopper. April 1952: US IBM introduces the IBM 701, the first computer in its 700 and 7000 series of large scale machines with varied scientific and commercial architectures, but common electronics and peripherals. Some computers in this series remained in service until the 1980s. June 1952: US
The history of computing hardware starting at 1960 is marked by the conversion from vacuum tube to solid-state devices such as transistors and then integrated circuit (IC) chips. Around 1953 to 1959, discrete transistors started being considered sufficiently reliable and economical that they made further vacuum tube computers uncompetitive .
The spirit duplicator invented in 1923 and sold by Ditto, Inc., used two-ply "spirit masters" or "ditto masters". The top sheet could be typed, drawn, or written upon. [citation needed] The second sheet was coated with a layer of colored wax. The pressure of writing or typing on the top sheet transferred colored wax to its back side, producing ...
Lou Ottens, an engineer who invited the concept of the cassette tape in the early 1960s and later helped develop compact discs, died Saturday at 94, according to news reports from the Netherlands.
1960: The first functioning laser is invented by Theodore Maiman. 1963: The first electronic cigarette is created by Herbert A. Gilbert. Hon Lik is often credited with its invention as he developed the modern electronic cigarette and was the first to commercialize it.