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UNITINFO.DAT
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1998-12-26
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_0
.This shareware version of UnitStar contains 23 categories and
.over 400 units, only one of which (the meter) has an associated
.description. If you want information on more units, please
.register UnitStar.
#
_1
.The meter is the fundamental unit of length in the SI.
.One meter is currently defined as the length of the path
.travelled by light in a vacuum during 1/299,792,458 of a second.\n
.\n
.In 1793, the French Academy of Sciences defined the meter
.as one-millionth of the length of the arc from the Earth's
.equator to the geographic north pole. Due to practical considerations,
.the first standard meter was constructed from a measurement of the
.arc between Dunkirk and Barcelona.\n
.\n
.In 1960, the meter was redefined as 1,650,763.73 wavelengths of one
.of the spectral lines of krypton-86. However, this definition was
.not sufficiently accurate, so the current definition was implemented
.in 1983.
#
_10000
.Proper format: YYYY-MM-DD\n
.where YYYY is the year, MM is the month, and DD is the date.\n
.A hyphen separates the different elements.\n
.\n
.Julius Caesar modified the Roman republican calendar to create the
.Julian calendar in 46 B.C. The calendar was inaccurate, and 16
.centuries later had deviated 11 days from actual time. To correct
.the error, Pope Gregory XIII declared that October 4, 1582 would be
.followed by October 15, 1582 and that henceforth, only centennial
.years which are multiples of 400 would be leap years.\n
.\n
.This program will convert dates ranging from the beginning of the
.Gregorian calender to December 31, 9998.
#
_10001
.In base conversions, proper input is a number using only those digits
.that are valid for the appropriate base.\n
.\n
.For binary numbers, 0 and 1 are the only valid digits.\n
.For octal numbers, 0 through 7 are the only valid digits.\n
.\n
.For bases above 10, letters of the alphabet are used as digits. A
.signifies 10, B signifies 11, C signifies 12, ... and Z signifies 35.\n
.\n
.The shareware version of UnitStar is restricted to bases between
.binary and hexadecimal (base-2 to base-16).
#
_10002
.In the Roman numeral system:\n
. I = 1\n
. V = 5\n
. X = 10\n
. L = 50\n
. C = 100\n
. D = 500\n
. M = 1000\n
.\n
.Rules:\n
.1. Add the values of each digit.\n
.2. When a digit is smaller than the one immediately following it, the
.two digits are taken as a group and the smaller one is subtracted from
.the larger one.\n
.\n
.V, L, and D cannot be used consecutively, nor can they be used as
.subtractors. In addition, except for the subtraction rule, no digit
.may be larger than any before it. Therefore, XLM is invalid, since
.it is not clear whether XL or LM should be taken as a group.
#
Z