What is Dicom?Dicom is ...
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No. | Base quantity | Name | Symbol |
1 | length | meter | m |
2 | mass | kilogram | kg |
3 | time | second | s |
4 | electric current | ampere | A |
5 | thermodynamic temperature | kelvin | K |
6 | amount of substance | mole | mol |
7 | luminous intensity | candela | cd |
In addition there are two SI supplementary units (so-called dimension less derived unit): the radian, the SI unit of the quantity plane angle; and the steradian, the SI unit of the quantity solid angle. Supplementary units are as follows:
Table: SI Supplementary Units
No. | Base quantity | Name | Symbol |
8 | plane angle | radian | rad |
9 | solid angle | steradian | sr |
Dicom deals with all these independent units or dimensions plus another special unit for currency. A total of 10 dimensions, that Dicom can consider to evaluate an expression.
Table: Dicom Special Unit for Currency
No. | Base quantity | Name | Symbol |
10 | currency | us dollar | USD |
Although, Dicom can recognize around 90 physical quantities and 650 units, it
is not limited to this set. User can easily add new physical quantity and unit
to the Dicom database. Once added to the database, user-defined units can be
used exactly like Dicom factory-defined units in a dimensional expression.
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Dicom document is rich text formatted (RTF) file, which is portable across
many applications and platforms. Dicom document, however, is not meant to be a
word processed file, there are already robust software to do that business of
word processing. In a Dicom document you can write your formatted text and
expression together which form the Dicom Input Document. Later you can process
the file to evaluate the expressions within the document. Dicom will generate a
corresponding Output Document.
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Dicom can be useful in many areas, especially in science and
engineering. Besides the need of quick calculation or unit conversion, some
possible applications of Dicom can be, design verification, quick estimates,
surveying, laboratory calculation, research, student's work sheet, etc. If you find Dicom
is helpful in your area, the Author would be pleased to know about that along
with your comments and suggestions.
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