terça-feira, 10 de novembro de 2009
Topic 14: Origami
Origami (折り紙?, from oru meaning "folding", and kami meaning "paper") is the traditional Japanese art of paper folding. The goal of this art is to create a representation of an object using geometric folds and crease patterns preferably without gluing or cutting the paper, and using only one piece of paper.
Origami only uses a small number of different folds, but they can be combined in a variety of ways to make intricate designs. The most well known form is probably the Japanese paper crane. In general, these designs begin with a square sheet of paper whose sides may be different colors or prints. Contrary to most popular belief, traditional Japanese origami, which has been practiced since the Edo era (1603–1867), has often been less strict about these conventions, sometimes cutting the paper during the creation of the design.
Origami only uses a small number of different folds, but they can be combined in a variety of ways to make intricate designs. The most well known form is probably the Japanese paper crane. In general, these designs begin with a square sheet of paper whose sides may be different colors or prints. Contrary to most popular belief, traditional Japanese origami, which has been practiced since the Edo era (1603–1867), has often been less strict about these conventions, sometimes cutting the paper during the creation of the design.
Topic 13: Binary Code
Binary code is the system of representing text or computer processor instru
ctions by the use of the binary number system's two-binary digits "0" and "1". A binary string of eight digits (bits), for example, can represent any of 256 possible values and can correspond to a variety of different symbols, letters or instructions. In 8-bit ASCII code the lowercase a is represented by the bit string 01100001.
In computing and telecommunication, binary code is used for any of a variety of methods of encoding data, such as character strings, into bit strings. Those methods may be fixed-width or variable-width.
In a fixed-width binary code, each letter, digit, or other character, is represented by a bit string of the same length; that bit string, interpreted as a binary number, is usually displayed in code tables in octal, decimal or hexadecimal notation.
ctions by the use of the binary number system's two-binary digits "0" and "1". A binary string of eight digits (bits), for example, can represent any of 256 possible values and can correspond to a variety of different symbols, letters or instructions. In 8-bit ASCII code the lowercase a is represented by the bit string 01100001.In computing and telecommunication, binary code is used for any of a variety of methods of encoding data, such as character strings, into bit strings. Those methods may be fixed-width or variable-width.
In a fixed-width binary code, each letter, digit, or other character, is represented by a bit string of the same length; that bit string, interpreted as a binary number, is usually displayed in code tables in octal, decimal or hexadecimal notation.
terça-feira, 3 de novembro de 2009
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