/usr/share/games/xabacus/Abacusjp1_1.les is in xabacus 8.0.2-1.
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Lesson 1.1: Counting from 1 to 20 on Japanese or Roman abacus
The beads will move at each step with an
appropriate explanation in this window.
Press Space-bar to Begin, press q to Exit
0 0 0 1 4
Lesson 1.1: Counting
1
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
2
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
3
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
4
Press Space-bar to Continue
0 0 0 0 4
Lesson 1.1: Counting
It gets a bit tricky here. A carry to the upper-deck, and
a reset of the lower deck will complete counting 5.
Press Space-bar to Continue
0 1 0 1 4
Lesson 1.1: Counting
5 (pending operation)
Carry-over to Upper-deck...
Press Space-bar to Continue
0 0 0 -4 4
Lesson 1.1: Counting
5
...and Reset Lower-deck... this is 5.
Press Space-bar
0 0 0 1 4
Lesson 1.1: Counting
6
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
7
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
8
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
9
Press Space-bar to Continue
0 0 1 1 4
Lesson 1.1: Counting
10 (pending operation)
Carry-over to Previous Column...
Press Space-bar to Continue
0 0 0 -4 4
Lesson 1.1: Counting
10 (pending operation)
...Reset Lower-deck...
Press Space-bar
0 1 0 -1 4
Lesson 1.1: Counting
10
Reset Upper-deck...
Press Space-bar to Continue
0 0 0 0 4
Lesson 1.1: Counting
Counting 10 was similar to counting 5, with the
addition of the extra carry to the Previous Column
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
11
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
12
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
13
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
14
Press Space-bar to Continue
0 0 0 -4 4
Lesson 1.1: Counting
15 (pending operation)
Reset Bottom-deck...
Press Space-bar to Continue
0 1 0 1 4
Lesson 1.1: Counting
15
...Carry-over to Upper-deck.
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
16
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
17
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
18
Press Space-bar to Continue
0 0 0 1 4
Lesson 1.1: Counting
19
Press Space-bar to Continue
0 0 1 1 4
Lesson 1.1: Counting
20 (pending operation)
...Carry-over To The Previous Column.
Press Space-bar to Continue
0 0 0 -4 4
Lesson 1.1: Counting
20 (pending operation)
...Reset Lower-deck...
Press Space-bar to Continue
0 1 0 -1 4
Lesson 1.1: Counting
20
...And Reset Upper-deck...
Press Space-bar to Continue
0 0 1 -2 4
Lesson 1.1: End
And now, some conclusions...
Press Space-bar to Continue
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Conclusion:
A bead on the upper-deck has a value of 5.
Each of the 4 beads on the lower-deck has a value of 1.
Press Space-bar to Continue
0 0 0 0 4
Conclusion: (continued)
Counting 5 beads on the lower deck requires a carry of
1 bead to the upper-deck.
Press Space-bar to Continue
0 0 0 0 4
Conclusion: (continued)
Counting 2 beads on the upper deck requires a carry of
1 bead on the lower-deck of the previous column.
Press Space-bar
0 0 0 0 4
Conclusion: (continued)
Every column to the left of one's column is an
order of magnitude greater.
Press Space-bar
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Conclusion: (End)
Columns to the right of the one's column are used
for calculations involving decimals.
Press Space-bar
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