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The manual vacuum cleaner was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar in use to a manual lawn mower. Its invention is dated to the second half of the 19th century, when patents were granted to inventors in the United States, Britain, France, and elsewhere.
The Digital logo was used up until 2004, even after the company ceased to exist, as the logo of Digital GlobalSoft, an IT services company in India (which was a 51% subsidiary of Compaq). Digital GlobalSoft was later renamed "HP GlobalSoft" (also known as the "HP Global Delivery India Center" or HP GDIC), and no longer uses the Digital logo.
An American style clothes dryer with a rear control panel A European style clothes dryer with a front control panel. A clothes dryer (tumble dryer, drying machine, or simply dryer) is a powered household appliance that is used to remove moisture from a load of clothing, bedding and other textiles, usually after they are washed in the washing machine.
The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1970s. A personal computer is one intended for interactive individual use, as opposed to a mainframe computer where the end user's requests are filtered through operating staff, or a time-sharing system in which one large processor is shared by many individuals.
These fibres can be used for high temperature insulation up to 1500C and cheaper than Carbon fiber composite. Silica-silica composite are prepared by leaching glass cloth with hydrochloric acid, rinsing to remove acid therefrom, vacuum drying, moulding and treating with ethyl silicate and cationic starch binder further drying and sintering.
The switchboard contained manual pushbuttons; one button crushed coal that was blown into the furnaces, while another button deposited ashes. [ 24 ] When the hotel opened, the power plant contained more than 200 direct current motors, [ 17 ] [ 23 ] rated at a combined 3,700 hp (2,800 kW). [ 17 ]