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A fire alarm annunciator panel is located where it is accessible to fire-fighting crews, such as at building entrances/exits. The annunciator panel will indicate the system status using lamps (or LEDs), an audible warning tone, and depending on the system technology, the exact location or approximate physical location of the source of a fire ...
A late 19th-century speaking trumpet used by firefighters A small sports megaphone for cheering at sporting events, next to a 3 in (8 cm) cigarette lighter for scale. From the Ancient Greek era to the nineteenth century, before the invention of electric loudspeakers and amplifiers, megaphone cones were used by people speaking to a large audience, to make their voice project more to a large ...
A panel discussion, or simply a panel, involves a group of people gathered to discuss a topic in front of an audience, typically at scientific, business, or academic conferences, fan conventions, and on television shows. Panels usually include a moderator who guides the discussion and sometimes elicits audience questions, with the goal of being ...
1801: James Pillans, headmaster and geography teacher at the Old High School in Edinburgh, Scotland, is credited with inventing the first modern blackboard. [1]1925: George Brooks of Topeka, Kansas is issued a patent for the use of corkboard as a bulletin board which you could stick tacks into. [2]
Announcement (computing), a message about a new software version Campaign announcement , a type of political speech Public service announcement , a media message in the public interest
The first article here is an example of an unusual preannouncement of bad news about expected government action.; Companies trading in the U.S. are required to preannounce stock buyback programs before they begin buying shares, and then to report on such programs in their quarterly and annual filings.
This was the first TwitchCon event held in Europe. It featured panels, workshops, and competitions like Twitch Rivals. Notable announcements included Twitch Sings, improved search features, and expanded monetization for creators. American actor David Hasselhoff appeared as a motivational speaker. Attendees had to be over 18 to enter the event ...
Central Train Indicator at Hilversum railway station announcing the Intercity towards Deventer; probably because of a disruption, it today ends at Amersfoort.. A passenger information system, or passenger information display system, is an automated system for supplying users of public transport with information about the nature and the state of a public transport service through visual, voice ...