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- UNITIO.EXE
- Unit conversion program
- for MSDOS computers and the ATARI Portfolio.
-
-
- UNITIO is a conversion utility for units of measurement. It is
- possible to use the program to convert other numeric values,
- for instance different rates of money exchange, but this is up
- to the user. At the moment UNITIO.EXE comes with a list of
- about 170 units used by physicists in different countries.
- A (to my knowledge) unique property of UNITIO is that the
- number of different possible conversions is unlimited.
- This, firstly, because the list of units supplied can be added
- to by the user, but secondly because of the formulas that can
- be incorporated in the list of units.
-
- For instance, if you want to convert a certain PRESSURE into
- another unit, these are the units you can choose from:
-
- PRESSURE
- Pa Pascal(SI)
- kPa Kilopascal
- ATM Atmosphere
- Bar
- PSF Pound per sq. Foot
- PSI Pound per sq. Inch
- TORR Torricelli (Mm Hg)
-
- Quite a range, but in some cases not sufficient. Often the
- amount of pressure is not expressed in one of the above, but in
- a combination of units from other physical quantities, like
- Newton / m2 or even 'foot of water'.
-
- In these cases you could choose :
-
- (FORCE)/(AREA)
- or
- (DIST)*(DENS)*[G]
-
- If you do, you are presented with the wide range of units
- UNITIO provides for FORCE, from which you could choose Newton,
- and then with AREA, where you could choose for (DIST)^2 and
- then for meters.
-
- In the case of 'foot of water' you choose for
- (DIST)*(DENS)*[G] , because as you will be aware a pressure of
- one 'foot of water' constitutes a DISTANCE of one foot times
- the DENSITY of water times the Gravitational Acceleration
- Constant G.
- But if you prefer, in the same way you could opt for 'mm of
- mercury' or 'miles under sealevel'. The words in normal
- brackets refer to other physical quantities contained in
- UNITS.FIL, the square brackets are used in case only one particular
- unit is indicated, as in this case G.
-
- The possibilities are quite extended. IF the user should
- incorporate enough formulas into the UNITS.FIL list, there is
- hardly any problem in physics that cannot be tackled.
- Operators that can be used in formulas are + - * / ^ SIN and
- COS.
-
- UNITIO was written using Borlands Turbo Pascal 5.5, with the
- intention to make more use of the Atari Portfolio's
- possibilities. Turbo Pascal calculates with an accuracy of about
- 10 decimals; not all the constants in UNITS.FIL are that accurate,
- though. The routines used are standard DOS routines, so
- the program works on PC, XT and AT machines as well.
-
- The EXE file has been compacted using LZEXE by Fabrice Bellard,
- to use as little of the precious card space as possible.
-
- Sjoerd Spoelstra
- Korenmolen 24
- 2906RA Capelle a/d IJssel
- HOLLAND.
-