Pseudocode is a compact and informal high-level description of a computer programming algorithm that uses the structural conventions of a programming language, but is intended for human reading rather than machine reading. Pseudocode typically omits details that are not essential for human understanding of the algorithm, such as variable declarations, system-specific code and subroutines. The programming language is augmented with natural language descriptions of the details, where convenient, or with compact mathematical notation. The purpose of using pseudocode is that it is easier for humans to understand than conventional programming language code, and that it is a compact and environment-independent description of the key principles of an algorithm. It is commonly used in textbooks and scientific publications that are documenting various algorithms, and also in planning of computer program development, for sketching out the structure of the program before the actual coding takes p
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A flowchart is a diagrammatic representation of a step-by-step solution to a given problem. It is a common type of diagram, that represents an algorithm or process, showing the steps as boxes of various kinds, and their order by connecting these with arrows. Data is represented in these boxes, and arrows connecting them represent flow / direction of flow of data. Flowcharts are used in analyzing, designing, documenting or managing a process or program in various fields.
Microfiche, and its close cousin microfilm, have been around for years. They are valuable research and archive sources in libraries around the world. A microfiche is a 4 by 5 inch (10.2 by 15.2 cm) piece of photographic film, containing printed information in a size too small to be seen by the naked eye. Books, journals and magazines are often archived on microfiche. The advent of microfiche allowed libraries to carry printed resources they would otherwise never have the floor or storage space to hold.
The major advantages of microfiche include storage in a small space, stability of the format, and no special knowledge needed to read it. As long as a microfiche machine is avail
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Plotters are a specialist type of printer which is able to draw high quality images on very largepieces of paper, for example 3 foot wide by 10 foot long.
They are used by engineers, architects and map-makers to draw plans of buildings, diagrams of machines or large scale maps. They can also be used for many other similar tasks.
A plotter differs from a printer in that it draws images using a pen that can be lowered, raised and moved across the paper to form con
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laser printers are used in many workplaces because they are quiet, they print a large number ofsheets very quickly and they produce high quality documents.
They print in the same way as photocopiers. Powdered ink, called 'Toner', is fused onto paper by heat and pressure.
You can purchase a laser printer which prints black and white copies only or you can pick a colour laser printer. Black and white versions are relatively cheap to purchase and you only need to buy one toner (which is also expensive). Colour laser printers are still a little too expensive for most people to purcha
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