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BASIC Extension
BASIC toolkits (aka BASIC extensions) were a common type of program for 1980s 8-bit home computers. Generally third-party extensions, they added additional features to a computer's built-in BASIC interpreter. __NOTOC__ Technical concept Toolkits ran as extensions to the BASIC interpreter supplied with the machine. At the time, such interpreters almost always came programmed into the ROM of the computer, making it impossible to modify or patch the code. It was also extremely rare for manufacturers to offer upgrades or bugfixes except as part of new models of machine. As the original language was held in immutable ROM, it generally was difficult for a toolkit to directly extend the language, except by adding new keywords to perform functions not implemented by the original interpreter. Functionality Typical toolkit functionality included editing extensions, such as commands to renumber a program, perform block line deletions and so on, facilities to make structured programming pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lightning BASIC
Lightning is a naturally occurring electrostatic discharge during which two electric charge, electrically charged regions, both in the atmosphere or with one on the land, ground, temporarily neutralize themselves, causing the instantaneous release of an average of one Joule, gigajoule of energy. This discharge may produce a wide range of electromagnetic radiation, from heat created by the rapid movement of electrons, to brilliant flashes of visible light in the form of black-body radiation. Lightning causes thunder, a sound from the shock wave which develops as gases in the vicinity of the discharge experience a sudden increase in pressure. Lightning occurs commonly during thunderstorms as well as other types of energetic weather systems, but volcanic lightning can also occur during volcanic eruptions. The three main kinds of lightning are distinguished by where they occur: either inside a single Cumulonimbus cloud, thundercloud (intra-cloud), between two clouds (cloud-to-cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
