Metric Clock Instructions

The Metric Clock - Operating Instructions

Author: Jon Knoll
Date: Jan 5, 2001
Firmware Version: 1.01b

Introduction:

Why a metric clock? Novelty, nothing more. I know this idea will never really catch on but it's a fun idea. I wanted to look at a clock where I could say, "Wow, look at the time! It's 78 past 4." or "Oh my goodness, it's almost E!"

The different Clock Modes:

12-Hour Time -- standard AM/PM 12-Hour time. A period (.) in the lower right corner of the display indicates AM or PM.
24-Hour Time -- standard time from 0:00:00 to 23:59:59.

What is Metric time?

10 Hours per day, 100 minutes per hour, 100 seconds per minute.
You can also see what percent of the day is gone by looking at the first 2 digits. For example 8:65:71 means 86.571% of the day is past.

What is Hex time?
16 Hours per day, 16 minutes per hour, 256 seconds per minute displayed in hex (base 16) so actually it reads F hours per day, F minutes per hour, FF seconds per minute

What is Circle time?
A circle has 360 degrees but you can also say it has 6.2832 radians. That is exactly 2pi radians which is once around a circle. The decimal point is at the first colon. Now you can see the time of day in radians!

What do the buttons do?

Button 1: Change Clock Mode
Button 1 rotates through the different clock modes in the following order:

1. 12-Hour Time (default)
2. 24-Hour Time
3. Metric Time
4. Hex Time
5. Circle Time
back to mode 1...

Button 2: Change Colon Mode
Button 2 rotates through the different colon flash modes in the following order:

1. Colons On (default)
2. Colons flash to the seconds of whatever mode it is in
3. Colons flash every 1 second (normal time) according to the internal 1 second timer (regardless of what mode it is in)
4. Left colon flashes every normal second, right colon flashes to the seconds of whatever mode it is in
5. Colons Off
back to mode 1...

Button 3: Change Time
To set the time, button 3 must be pressed and held. The clock will automatically switch to normal 12 hour time.
Button 1 is used to advance the time.
Press once to advance the minute.
Press and hold to rapidly advance through the minutes and hours
Button 2 is used to zero the seconds
Press and hold to zero the seconds.
Release to start seconds counting.