mirror of https://github.com/espruino/BangleApps
48 lines
1.8 KiB
Markdown
48 lines
1.8 KiB
Markdown
# TheBinWatch
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Binary watch to train Your brain
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Inspired by the LCD wrist watch from TecRAL from 1989
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## Usage
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- swipe to left or right to change displayed text (date, time, ...)
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- currently only available for BangeJs2
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- Widgets will not be shown
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- If bluetooth connection is not established an icon will show up
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## How it works
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Binary means that every digit can represent 2 states: 0 or 1, displayed by a black bar.
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The principle is the same like in out well known and daily used decimal system with values from 0 to 9:
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We start from the most right position with the least significant bit (binary digit) which can have the value 0 or 1
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The 2nd bit from the right can have the value 0 or 2 (sum of all bits to the right set to 1 plus 1).
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This principle is valid for all the remaining bits.
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Mathematically spoken: the value of a digit is the base number of the system (10 for decimal or 2 for binary)
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to the power of the position (from the right, starting with 0).
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That means in numbers: 2^5 = 32, 2^4 = 16, 2^3 = 8, 2^2 = 4, 2^1 = 2, 2^0 = 1
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The upper row represents the hours with 4 bit (2^4 = 16 possible values in total, 12 are used: 1 to 12),
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the 2nd row represents the minutes with 6 bit (2^6 = 64 possible values in total, 60 are used: 0 to 59).
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Same holds for the thrid row: 0-59 seconds
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To read the values of a row we summ up the vaules of set bits (black bars).
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E.g. the picture above, 3rd row (seconds):
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101001
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is 1 * 32 + 0 * 16 + 1 * 8 + 0 * 4 + 0 * 2 + 1 * 1
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is (only the '1' bit): 32 + 8 + 1 = 41
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for the minutes we do the same: 32 + 1 = 33
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and the hours: 8 + 2 = 10
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So the time is 10:33:41 (that's all)
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## TRAIN YOUR BRAIN
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Remark: more infos about the original watch including manual can be found here:
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https://timeartpiece.com/watches/tech-ral-binary
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