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  2. Envelope - Wikipedia

    en.wikipedia.org/wiki/Envelope

    Envelope-making machines at the Post Office Savings Bank, Blythe House, West Kensington, London Machine Envelope Printer was one of the machine presses at the Bulaq Press. It present now in Bibliotheca Alexandrina. The most famous paper-making machine was the Fourdrinier machine. The process involves taking processed pulp stock and converting ...

  3. Postage stamp - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp

    The first machine specifically designed to perforate sheets of postage stamps was invented in London by Henry Archer, an Irish landowner and railroad man from Dublin, Ireland. [45] The 1850 Penny Red [ 44 ] [ 46 ] [ 47 ] was the first stamp to be perforated during trial course of Archer's perforating machine.

  4. Synthesizer - Wikipedia

    en.wikipedia.org/wiki/Synthesizer

    Envelopes control how sounds change over time. They may control parameters such as amplitude (volume), filters (frequencies), or pitch. The most common envelope is the ADSR (attack, decay, sustain, release) envelope: [8] Attack is the time taken for initial run-up of level from nil to peak, beginning when the note is triggered.

  5. Automated teller machine - Wikipedia

    en.wikipedia.org/wiki/Automated_teller_machine

    An automated teller machine ( ATM) is an electronic telecommunications device that enables customers of financial institutions to perform financial transactions, such as cash withdrawals, deposits, funds transfers, balance inquiries or account information inquiries, at any time and without the need for direct interaction with bank staff.

  6. Mail sorting - Wikipedia

    en.wikipedia.org/wiki/Mail_sorting

    Mail sorting. Mail sorting refers to the methods by which postal systems determine how and where to route mail for delivery. Once accomplished by hand, mail sorting is now largely automated through the aid of specialized machines. The first widely adopted mail sorting machine was the Transorma, first made operational in Rotterdam in 1930.

  7. History of the transistor - Wikipedia

    en.wikipedia.org/wiki/History_of_the_transistor

    The first transistor was successfully demonstrated on December 23, 1947, at Bell Laboratories in Murray Hill, New Jersey. Bell Labs was the research arm of American Telephone and Telegraph (AT&T). The three individuals credited with the invention of the transistor were William Shockley, John Bardeen and Walter Brattain.

  8. Printing press - Wikipedia

    en.wikipedia.org/wiki/Printing_press

    t. e. A printing press is a mechanical device for applying pressure to an inked surface resting upon a print medium (such as paper or cloth ), thereby transferring the ink. It marked a dramatic improvement on earlier printing methods in which the cloth, paper, or other medium was brushed or rubbed repeatedly to achieve the transfer of ink and ...

  9. Postage stamps and postal history of the United States

    en.wikipedia.org/wiki/Postage_stamps_and_postal...

    Benjamin Franklin — George Washington The First U.S. Postage Stamps, issued 1847. The first stamp issues were authorized by an act of Congress and approved on March 3, 1847.[ 20] The earliest known use of the Franklin 5¢ is July 7, 1847, while the earliest known use of the Washington 10¢ is July 2, 1847.