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Not to be confused with Printed electronics. "PC board" redirects here. For the mainboard of personal computers, see Motherboard. "Panelization" redirects here. For the page layout strategy, see N-up. Printed circuit board of a DVD player Part of a 1984 Sinclair ZX Spectrum computer board, a printed circuit board, showing the conductive traces, the through-hole paths to the other surface, and ...
1961: The Sumlock ANITA calculator, the world's first all-electronic desktop calculator, designed and built by the Bell Punch Company of Uxbridge. 1962: The Atlas computer – arguably the world's first supercomputer, and fastest computer in the world until the American CDC 6600 – developed by a team headed by Tom Kilburn (1921–2001).
An industrial electric motor . An electric motor is a machine that converts electrical energy into mechanical energy.Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft.
The full eagle logo, used in various versions from 1970 to 1993. The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or simply the Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, its insular areas and associated states.
The 1860s were a period of growing protectionism in the United States, while the European free trade phase lasted from 1860 to 1892. The tariff average rate on imports of manufactured goods in 1875 was from 40% to 50% in the United States, against 9% to 12% in continental Europe at the height of free trade. [44]
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