A computing utility that allows instant computation at your desktop. It is a
new kind of calculator that can calculate with units.
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Dicom calculates, converts and computes. The first ever computing tool that
deals with dimensions of physical quantities in mathematical expression, Dicom,
has the answer to expression like: 30 mi./h.+6 ft./s.+15.24 m./s. to ft./s. Dicom
can evaluate expressions anywhere in a rich text formatted document. It has a
builtin rich text editor.
Dicom can meet your calculation needs, be it simple, scientific, financial,
mathematical, statistical,
or you name it. Process your words,
numbers, and measurements at one place.
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Yes, conventional software based calculator usually simulates the
real calculators. Dicom has a calculator which is very different. It is
rather an expression evaluator. And probably for the first time, you
can evaluate dimensional expression. It has a unit converter too. That
allows you to quickly convert from one unit to another. And as stated
already, it has a built in rich text editor that can process texts as
well as dimensional expressions.
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What is dimensional expression?
6*5/3+21 is a mathematical expression, for
example. This expression is dimensionless. The result of the expression is
11. But it is just a number and does not represent
any physical quantity like length, mass, time, etc., unless you explicitly
mention what it represents.
On the other hand, 30 mi./h.+6 ft./s.+15.24 m./s.
is another mathematical expression which has got dimensions of physical
quantities. In this expression mi.,h., ft., s., and m.,
are mile, hour, feet, second, and meter respectively that represent either
length or time. Thus each term of the expression has two dimensions, length and
time. In combination they represent the speed or velocity of something. You can
express the result of a dimensional expression to another consistent or
homogeneous unit. To express the result in ft./s.,
for example, you need to write following expression in dicom:
30 mi./h.+6 ft./s.+15.24 m./s. to ft./s.
Dicom will happily respond to that, giving you the result, which is of course
100 ft./s.
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There are seven base quantities, assumed to be mutually independent, on which
the International System of Unit (SI) is founded. Following table describes
these base units.
Table: SI Base Units
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 (socalled 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, userdefined units can be
used exactly like Dicom factorydefined 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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