To determine the initial settings for the digits, you have to determine the
number of days from your birth to the present and divide by 23, 28 and 33
to obtain your personal "P", "S" and "I" curve position for that day. Once
this information is entered in the Biorhythm Clock, one count is automatically
added each that is even correct on leap years all the way to 2000 and beyond.
To count the total number of full days you've been alive, start with the *full*
years since your birth date and multiply by 365. Add the number of leap year days
during those years, every year divisible by 4 (such as 1976) is a leap year, except
for years divisible by 100, such as 1800 and 1900. However, years divisible by 400,
such as 2000, *are* leap years. This compensates for the difference between
the length of the common and astronomical years. Now add the days of each *full*
month, being careful to get the right number of days in each month. Add to this the
number of days in the parts of a month. You now have a *total days* figure,
excluding the setting day, which will be added in the setting procedure.
Divide by 23, the result will be a full number and a remainder. The full number
represents the completed cycles you've already experienced; the remainder is
*yesterday* in your present cycle. Enter this remainder on the "P" (red)
digits. Do the same for the "S" (green) curve by dividing by 28, and divide by
33 to obtain the "I" (yellow) count entry.
For example, suppose today is July 2, 1977, and you were born July 23, 1927.
Start by calculating the number of days in the full years: 1928 - 1976, inclusive - 49
years × 365 &eq; 17,885 days. Next come the leap year days: 49 divided by 4
equals 12 days (eliminate the remainder). Now calculate the number of days in the
full months between the day you were born and January 1, 1928 (the beginning of the
first full year): 153 days (August through December). Don't forget to add the number
of days in the full months between the last full year and today's date: 181 days
(January through June). Lastly, calculate the number of days in the partial months
between the day you were born and the last full month: 9 days (July 23, 1927 and
July 31, 1927). Don't forget the number of days between the last full month and
today's date: 1 (July 1, 1977). Add all the days and you will discover that you have
been alive 18,241 days.
Note that the total number of days is *one less* than the actual number of days
of your life, since the day of setting was not included. This is the number you must
use, since you will add one day when you set the clock.
Now, divide 18,241 by 23, 28 and 33. Since 18,241 divided by 23 is 793 with a
remainder of 2, the "P" initial setting is 2. (Note: If you use a calculator, the
answer is 793.08695. Multiply the decimal portion by the divisor - in this case 23 - which
gives .08695 × 23 &eq; 1.99985, or 2 days.) Similarly, dividing 18,241 by 28
gives an "S" setting of 13, and dividing by 33 yields an "I" setting of 25.
Set these "P", "S" and "I" numbers into the Biorhythm Clock, remembering to press and
release the setting switch *only* when the blinking LED is off, or the digits
will jump ahead. If this happens, just repeat the operation. Each pair of digits
are set separately, and do not interact with any other pair. If the digits do not
advance when the pushbuttons are pressed and the LED stays on, this means the clock
IC alarm pin is active, grounding the 7490 unit counters through transistor Q1.
Just hold down the FAST pushbutton for two or three seconds to clear this condition.
Now you must decide the time your want your digits to advance each day - midnight,
noon, 8 AM? The choice is up to you, but around midnight is the most usual time.
The time you choose determines the next and final steps in setting the clock.
Hold the FAST pushbutton down until all three digit pairs advance simultaneously.
THis could take as long as 23 seconds, depending on the random turn-on clock IC
alarm and real-time settings (Since these settings cannot be read, no control is
provided.) Activating the FAST switch causes the clock IC real time to advance
one hour per second, until it coincides with the alarm time. At this point,
the alarm positive output turns on transistor Q1, the three units digits advance
one count and your biorhythm count is displayed for the start of "today."
Releasing the FAST switch causes the clock IC to count in real time; the alarm
output at pin 25 of the MM5316 will remain active for an hour, the nturn off and
repeat 24 hours later, advancing the digits one count. However, you can advance
the clock time one hour per second by holding down the FAST switch, moving ahead
through "today" for as many hours as you desire. For example, if you set the
clock at 4 PM and you want it to change at midnight each day, because 4 PM is
16 hours past midnight, you have advanced 16 hours into "today." Therefore,
when the digits have advanced once, which brings them up to "today's" count,
just continue to hold the FAST switch down for 16 more seconds, using the
blinking LED to count the seconds. When you release the switch, the clock IC
will count at normal speed and, in around eight hours (in this example, around
midnight) all digit pairs will advance by one, and you'll be into "tomorrow"!
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