Examples of scalar data types are integer, real, Boolean, character, subrange and enumerated. Structured data types are made of the scalar types, for example, arrays, records, files and sets. We will discuss the pointer data types later. Pascal Data Types: Pascal data types can be summarized as below the following diagram: Type Declarations. The type declaration is used to declare the data type of an identifier. Syntax of type declaration is: type-identifier-1, type-identfier-2 = type-specifier;
Root performs at the Historical Society, November 5, 2010. Music of the Gaslight Era (1890 - 1920) The Holliston Historical Society hosted a presentation by John Root on Popular Music of the Gaslight Era (1890â1920). Listen to John Root describe the writer and the song to the audience before singing (along with the audience) in the video above.
Despite nightmares like the one depicted above, gas manufacturers responded to the challenge with two major advances. The first was better quality gas. The second was an incandescent mantle invented by Carl Auer von Welsbach of Austria (who later invented the first commercial metal filament light bulb).Both innovations resulted in more brighter, more efficient light.n 1816 gas streetlights went into service in Baltimore, and by the time of Edison's 1879 lamp invention, gas lighting was a mature, well-established industry. The gas infrastructure was in place, franchises had been granted, and manufacturing facilities for both gas and equipment were in profitable operation.