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  2. Electric gate - Wikipedia

    en.wikipedia.org/wiki/Electric_gate

    Electric gates alone, however solid and imposing they may be, cannot guarantee a completely secure environment electric locks, are often needed to boost the locking effectiveness of the gate motors. Electric gates are recommended to be used in combination with other security features to install a full security system .

  3. Iron Gate I Hydroelectric Power Station - Wikipedia

    en.wikipedia.org/wiki/Iron_Gate_I_Hydroelectric...

    The Iron Gate I Hydroelectric Power Station (Romanian: Porțile de Fier I, Serbian: Ђердап I /Đerdap I) is the largest dam on the Danube river and one of the largest hydro power plants in Europe. It is located on the Iron Gate gorge, between Romania and Serbia.

  4. Powell v. Home Depot USA, Inc. - Wikipedia

    en.wikipedia.org/wiki/Powell_v._Home_Depot_USA,_Inc.

    Powell v. The Home Depot USA, Inc., 663 F.3d 1221 (Fed. Cir. 2011), [1] was a decision by the United States Court of Appeals for the Federal Circuit on the issue of patent infringement on a "safe hands" device that Michael Powell, an independent contractor for Home Depot, created in response to injuries to the hands of associates using in-store radial arm saws.

  5. Platform screen doors - Wikipedia

    en.wikipedia.org/wiki/Platform_screen_doors

    Half-height platform edge doors, also known as automatic platform gates, are cheaper to install than full-height platform screen doors, which require more metallic framework for support. Some railway operators may therefore prefer such an option to improve safety at railway platforms and, at the same time, keep costs low and non-air-conditioned ...

  6. Fredkin gate - Wikipedia

    en.wikipedia.org/wiki/Fredkin_gate

    The basic Fredkin gate [3] is a controlled swap gate (CSWAP gate) that maps three inputs (C, I 1, I 2) onto three outputs (C, O 1, O 2). The C input is mapped directly to the C output. If C = 0, no swap is performed; I 1 maps to O 1, and I 2 maps to O 2. Otherwise, the two outputs are swapped so that I 1 maps to O 2, and I 2 maps to O 1. It is ...

  7. Logic gate - Wikipedia

    en.wikipedia.org/wiki/Logic_gate

    A logic circuit diagram for a 4-bit carry lookahead binary adder design using only the AND, OR, and XOR logic gates.. A logic gate is a device that performs a Boolean function, a logical operation performed on one or more binary inputs that produces a single binary output.

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