Here's what I decided the computer should do:
- At the time it's made, you specify the dates of birth (month, day and year) for two people. That's all.
(The machine is built specifically for those two people, and can't be changed.)
- The finished machine will have a calendar display (for 100 years or so), and three pairs of indicator needles.
- ...so when you set it to the current date, the needles will show the Biorhythm
readings for those two people. So they can know (just for example) when they're in sync physically. Ahem.
I know about biorhythms because when I was in 7th grade my folks helped me print out computer-generated biorhythm charts as gifts for my teachers. Those charts were amazing, because it was 1981 and a lot of really basic computer stuff was amazing in 1981.
In case you haven't heard about biorhythms, I'll do a quick overview, but you can read about them here:
Biorhythms are kind of like astrology. They're interesting and fun, but not actually science.
The idea is that there are 3 cycles which govern how you feel, and they oscillate at different frequencies
23 days for "physical"
28 days for "emotional" (Yeah I know, but I swear I didn't make that one up)
33 days for "intellectual"
As these go up and down, you supposedly get strong/weak, cheerful/cranky, and smart/dumb.
Like I said, it's fun to share with friends or an SO, but not actually science.
Besides the fun, the reason I decided to do this is that the computer only has to produce three sine waves
. That's all. If I can't make a computer that does that, then I've got no business making anything more complex, like an orrery or an encryption device.
So whatever other parts there are, the machine is going to need three special gears for sure (see picture): One with 33 teeth, one with 28 teeth, and one with 23 teeth.