Abacus: Revision history

24 April 2024

• curprev 03:4903:49, 24 April 2024‎ Jacobolus talk contribs‎ m 52,001 bytes −26‎ →‎Feynman vs the abacus: this is about a Japanese person who happened to be in Brazil, not a Japanese–Brazilian undo Tag: Manual revert
• curprev 02:1102:11, 24 April 2024‎ Bentley31415 talk contribs‎ 52,027 bytes +26‎ →‎Feynman vs the abacus: Added link undo Tag: Reverted

23 April 2024

• curprev 11:3511:35, 23 April 2024‎ ExclusiveEditor talk contribs‎ 52,001 bytes −40‎ Per WP:OL and a moved wikilink. undo Tag: Visual edit

22 March 2024

• curprev 19:2619:26, 22 March 2024‎ JoshTheeDawg talk contribs‎ 52,041 bytes +107‎ Citation [48] added undo Tag: Visual edit

7 March 2024

• curprev 09:2709:27, 7 March 2024‎ 103.86.197.73 talk‎ 51,934 bytes −6‎ No edit summary undo Tag: Manual revert
• curprev 09:2609:26, 7 March 2024‎ 103.86.197.73 talk‎ 51,940 bytes +6‎ No edit summary undo Tag: Reverted

27 February 2024

• curprev 12:4612:46, 27 February 2024‎ Nø talk contribs‎ 51,934 bytes −3,350‎ Undid revision 1210603222 by Nø (talk) Undo my undo - the gallery was of poor quality and it is not clear how any of it adds anything worthwhile to the article. undo Tag: Undo
• curprev 12:1912:19, 27 February 2024‎ Nø talk contribs‎ 55,284 bytes +3,350‎ Undid revision 1210538770 by Vigilantcosmicpenguin (talk) unexplained deletion of section undo Tags: Undo Reverted
• curprev 03:2403:24, 27 February 2024‎ Vigilantcosmicpenguin talk contribs‎ 51,934 bytes −3,350‎ Removed gallery section #article-section-source-editor undo Tags: Reverted Mobile edit Mobile app edit iOS app edit

14 February 2024

• curprev 07:3807:38, 14 February 2024‎ AStiasny talk contribs‎ m 55,284 bytes +1‎ (GR) File renamed: File:The vntage abacus at the Petrovskoye mansion museum.jpg → File:The vintage abacus at the Petrovskoye mansion museum.jpg Criterion 1 (original uploader’s request) undo

3 February 2024

• curprev 19:5219:52, 3 February 2024‎ Joesom333 talk contribs‎ m 55,283 bytes −4‎ →‎School abacus: removing unnecessary link: link just redirected back to this very article undo

25 January 2024

• curprev 04:3004:30, 25 January 2024‎ White whirlwind talk contribs‎ 55,287 bytes −43‎ No edit summary undo

6 January 2024

• curprev 03:1403:14, 6 January 2024‎ Jacobolus talk contribs‎ 55,330 bytes +10‎ consolidate hatnotes undo

4 January 2024

• curprev 00:1500:15, 4 January 2024‎ DangerouslyPersuasiveWriter talk contribs‎ 55,320 bytes +38‎ No edit summary undo

30 November 2023

• curprev 03:5803:58, 30 November 2023‎ Omeganian talk contribs‎ m 55,282 bytes 0‎ →‎Russia undo

29 November 2023

• curprev 01:4501:45, 29 November 2023‎ Jacobolus talk contribs‎ 55,282 bytes −56‎ Undid revision 1187387067 by Vicgraus (talk) – these little floating eyesores don't help anything. a full algorithm for these does not belong in the lead section, but you are welcome to critique the material included further down the page, e.g. by starting a talk page discussion about it undo Tag: Undo

28 November 2023

• curprev 23:0123:01, 28 November 2023‎ Vicgraus talk contribs‎ m 55,338 bytes +56‎ Nobody has explained yet how an abacus is used to add or multiply! undo Tag: Reverted

27 November 2023

• curprev 12:5112:51, 27 November 2023‎ Largoplazo talk contribs‎ 55,282 bytes 0‎ Reverted 1 edit by Omeganian (talk): It was correct before, not after. undo Tags: Twinkle Undo
• curprev 12:3112:31, 27 November 2023‎ Omeganian talk contribs‎ m 55,282 bytes 0‎ →‎Russia undo Tag: Reverted

4 November 2023

• curprev 13:0713:07, 4 November 2023‎ Nø talk contribs‎ m 55,282 bytes +6‎ Undid revision 1183450763 by 87.74.79.82 (talk) undo Tag: Undo
• curprev 11:3511:35, 4 November 2023‎ 87.74.79.82 talk‎ 55,276 bytes −6‎ No edit summary undo Tags: Reverted Mobile edit Mobile web edit

1 November 2023

• curprev 14:2614:26, 1 November 2023‎ Jacobolus talk contribs‎ m 55,282 bytes 0‎ Undid revision 1182946932 by 124.40.49.193 (talk) – this exclamation mark is not necessary. undo Tag: Undo
• curprev 10:4610:46, 1 November 2023‎ 124.40.49.193 talk‎ 55,282 bytes 0‎ No edit summary undo Tags: Reverted Mobile edit Mobile web edit

20 October 2023

• curprev 13:2713:27, 20 October 2023‎ Largoplazo talk contribs‎ m 55,282 bytes −1‎ Reverted edit by 58.111.94.202 (talk) to last version by Regulov undo Tag: Rollback
• curprev 13:0813:08, 20 October 2023‎ 58.111.94.202 talk‎ 55,283 bytes +1‎ No edit summary undo Tag: Reverted

8 October 2023

• curprev 14:1714:17, 8 October 2023‎ Regulov talk contribs‎ m 55,282 bytes +1‎ →‎Japan undo

3 September 2023

• curprev 18:2718:27, 3 September 2023‎ HeyElliott talk contribs‎ 55,281 bytes 0‎ →‎China: Capitalization undo Tag: 2017 wikitext editor

2 September 2023

• curprev 11:5611:56, 2 September 2023‎ 80.235.133.141 talk‎ 55,281 bytes −2‎ Fixed typo undo Tags: Mobile edit Mobile web edit

30 August 2023

• curprev 17:5717:57, 30 August 2023‎ Favonian talk contribs‎ m 55,283 bytes +4‎ Reverted edit by 192.161.74.54 (talk) to last version by Citation bot undo Tag: Rollback
• curprev 17:5517:55, 30 August 2023‎ 192.161.74.54 talk‎ 55,279 bytes −4‎ →‎Etymology undo Tag: Reverted
• curprev 07:4407:44, 30 August 2023‎ Citation bot talk contribs‎ 55,283 bytes +58‎ Add: publisher. | Use this bot. Report bugs. | Suggested by Corvus florensis | #UCB_webform 499/2500 undo

29 August 2023

• curprev 14:0614:06, 29 August 2023‎ MrOllie talk contribs‎ 55,225 bytes −296‎ Reverted 3 edits by Arithmometer (talk): Apparent COI / selfpromo undo Tags: Twinkle Undo
• curprev 13:5913:59, 29 August 2023‎ Arithmometer talk contribs‎ 55,521 bytes −297‎ →‎References undo Tag: Reverted
• curprev 13:5913:59, 29 August 2023‎ Arithmometer talk contribs‎ 55,818 bytes +296‎ →‎Reading undo Tag: Reverted
• curprev 13:5813:58, 29 August 2023‎ Arithmometer talk contribs‎ 55,522 bytes +297‎ →‎References undo Tag: Reverted

25 August 2023

• curprev 16:0516:05, 25 August 2023‎ Em3rgent0rdr talk contribs‎ 55,225 bytes −7‎ In retrospect, "columns" could be confusing too. To avoid confusing words of "columns" and "rows", just say "an array of beads". undo Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit

23 August 2023

• curprev 21:0021:00, 23 August 2023‎ Dicklyon talk contribs‎ m 55,232 bytes 0‎ case fix (via WP:JWB) undo

17 August 2023

• curprev 03:0003:00, 17 August 2023‎ Em3rgent0rdr talk contribs‎ 55,232 bytes +18‎ replace "rows" with "columns", because "columns" are generally associated with vertical and "rows" are generally associated with horizontal, and in most orientations of abacuses, the rods are vertical from the users point of view. undo Tag: Visual edit

16 August 2023

• curprev 21:3321:33, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 55,214 bytes +65‎ say "resembling" or "-like" for bi-quinary coded, cause isn't precisely identical to it depending on how exactly bi-quinary coding is defined. (e.g. with two beads on top can represent more than two states, so isn't precisely "bi") undo Tag: Visual edit
• curprev 18:5818:58, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 55,149 bytes 0‎ collect the construction into one paragraph. So now each paragraph is on its own separate topic. undo Tag: Visual edit
• curprev 18:5718:57, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 55,149 bytes +396‎ collect number representation together in one paragraph, and have operation in separate paragraph. Elaborate a bit. Also it seems the rational numbers are really only for simple fractional components not any rational number and the Roman is probably the best example. undo Tag: Visual edit
• curprev 07:5307:53, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,753 bytes −35‎ A bit hesitant to call this using bi-quinary coded decimal, cause there are six states for bottom beads and three states for top beads. undo Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
• curprev 07:2607:26, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,788 bytes −4‎ Rather than Chinese style, for more generality say this is bi-quinary coded decimal. Cause other cultures seem to use that too. undo Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
• curprev 07:1807:18, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,792 bytes +21‎ Hyperlink slidable undo Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
• curprev 07:1707:17, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,771 bytes −34‎ Shorten this about unknown origin undo Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
• curprev 07:1407:14, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,805 bytes +31‎ Add and link to fixed-point arithmetic undo Tags: Visual edit Mobile edit Mobile web edit Advanced mobile edit
• curprev 03:4903:49, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,774 bytes +63‎ →‎China: add specific technical term for this decimal representation system: bi-quinary coded decimal undo Tag: Visual edit
• curprev 03:4703:47, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,711 bytes +28‎ this abacuses seems to adhere to what I'm calling here "Chinese-style" (suanpan), though I can't say if that is specifically a chinese one or not. undo Tag: Visual edit
• curprev 03:4003:40, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,683 bytes +2‎ →‎Slideshow of various abacuses: alignment has to be center, actually, cause or else subsequent section text will try to wrap around. undo
• curprev 03:4003:40, 16 August 2023‎ Em3rgent0rdr talk contribs‎ 54,681 bytes −1‎ →‎Slideshow of various abacuses: align right didn't work nicely undo