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  2. Recycling codes - Wikipedia

    en.wikipedia.org/wiki/Recycling_codes

    Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.

  3. Trash (computing) - Wikipedia

    en.wikipedia.org/wiki/Trash_(computing)

    In versions of Windows prior to Windows Vista, the default configuration of the Recycle Bin is a global setting for all drives to hold 10% of the total capacity of each host hard drive volume to store deleted files. For example, on a volume with a capacity of 20 gigabytes, the Recycle Bin will hold up to 2 gigabytes of deleted files.

  4. Gray code - Wikipedia

    en.wikipedia.org/wiki/Gray_code

    When the French engineer Émile Baudot changed from using a 6-unit (6-bit) code to 5-unit code for his printing telegraph system, in 1875 [33] or 1876, [34] [35] he ordered the alphabetic characters on his print wheel using a reflected binary code, and assigned the codes using only three of the bits to vowels.

  5. Bit numbering - Wikipedia

    en.wikipedia.org/wiki/Bit_numbering

    This table illustrates an example of an 8 bit signed decimal value using the two's complement method. The MSb most significant bit has a negative weight in signed integers, in this case -2 7 = -128. The other bits have positive weights. The lsb (least significant bit) has weight 1. The signed value is in this case -128+2 = -126.

  6. Binary-coded decimal - Wikipedia

    en.wikipedia.org/wiki/Binary-coded_decimal

    Many non-integral values, such as decimal 0.2, have an infinite place-value representation in binary (.001100110011...) but have a finite place-value in binary-coded decimal (0.0010). Consequently, a system based on binary-coded decimal representations of decimal fractions avoids errors representing and calculating such values.

  7. Recycling bin - Wikipedia

    en.wikipedia.org/wiki/Recycling_bin

    Blue bin recycling bin. The modern Blue-Box recycling bin was invented by Jack McGinnes nearly one hundred years after Poubelle's idea to sort types of waste by type. [9] The proliferation of curbside blue-bin recycling containers coincided with the increase in municipal recycling rates which increased from just over 6% in 1960 to over 35% in ...

  8. Bitwise operations in C - Wikipedia

    en.wikipedia.org/wiki/Bitwise_operations_in_C

    This is defined in the standard at ISO 9899:2011 6.5.7 Bit-wise shift operators. For example, when shifting a 32 bit unsigned integer, a shift amount of 32 or higher would be undefined. For example, when shifting a 32 bit unsigned integer, a shift amount of 32 or higher would be undefined.

  9. Densely packed decimal - Wikipedia

    en.wikipedia.org/wiki/Densely_packed_decimal

    Densely packed decimal (DPD) is an efficient method for binary encoding decimal digits.. The traditional system of binary encoding for decimal digits, known as binary-coded decimal (BCD), uses four bits to encode each digit, resulting in significant wastage of binary data bandwidth (since four bits can store 16 states and are being used to store only 10), even when using packed BCD.