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Date Name Thumbnail Size Description Versions
13:50, 10 September 2015 59.pdf (file) 639 KB 59’s Abacus Representations Over Time;
 and Playfully Counting By 11’s. 1
19:29, 31 August 2015 Sachs-pg228 commentsBySKS-2.pdf (file) 1.94 MB fixed formatting errors; increased resolution 2
18:54, 31 August 2015 AbacusAlternativeToTechnique.pdf (file) 949 KB In Section 13 Sachs demonstrates the use of “The Technique” for finding the reciprocal of a regular sexagesimal number c = 5,3,24,26;40. This paper demonstrates finding 1/c using a three tablet abacus; a procedure that can be used even with non-reg... 1
02:49, 21 August 2015 DoublingOnAbacusBase10.pdf (file) 723 KB Using two tablets to handle large numbers from geometric sequence calculations. Demonstration of doubling to calculate 20 digit result. Thoughts on multipliers from 3 to 32. 1
11:47, 28 May 2014 ElectronicChineseAbacus.pdf (file) 60 KB Title: A new construction adder based on Chinese abacus algorithm. Authors: Yi, Shu-Chung1 jerry1@url.com.tw Source: Computers & Electrical Engineering. Mar2012, Vol. 38 Issue 2, p185-193. 9p. Abstract: A new construction adder based on Chinese abacus alg 1
13:42, 3 September 2013 Sks23cu18 20.png (file) 109 KB   3
13:23, 3 September 2013 Sks23cu19c.png (file) 15 KB   2
13:20, 3 September 2013 Sks23cu19c.pdf (file) 77 KB   1
13:19, 3 September 2013 Sks23cu19b.png (file) 12 KB   2
13:18, 3 September 2013 Sks23cu19a.png (file) 147 KB   2
11:25, 2 September 2013 TheStephensonAbacus-ArchD.pdf (file) 2.68 MB   3
00:36, 28 August 2013 Sks23cuSubSciNotNumbers5.png (file) 263 KB   1
00:34, 28 August 2013 Sks23cuSubSciNotNumbers4.png (file) 253 KB   1
00:34, 28 August 2013 Sks23cuSubSciNotNumbers3.png (file) 253 KB   1
00:33, 28 August 2013 Sks23cuSubSciNotNumbers2.png (file) 297 KB   1
00:31, 28 August 2013 Sks23cuSubSciNotNumbers1.png (file) 257 KB   1
10:36, 26 August 2013 Sks23cuBase3MultStepD.png (file) 275 KB   2
10:36, 26 August 2013 Sks23cuBase3MultStepC.png (file) 273 KB   2
10:35, 26 August 2013 Sks23cuBase3MultStepB.png (file) 273 KB   2
10:34, 26 August 2013 Sks23cuBase3MultStepA.png (file) 273 KB   2
10:34, 26 August 2013 Sks23cuBase3MultStep9.png (file) 273 KB   2
10:34, 26 August 2013 Sks23cuBase3MultStep8.png (file) 273 KB   2
10:33, 26 August 2013 Sks23cuBase3MultStep7.png (file) 272 KB   2
10:33, 26 August 2013 Sks23cuBase3MultStep6.png (file) 273 KB   2
10:32, 26 August 2013 Sks23cuBase3MultStep5.png (file) 273 KB   2
10:32, 26 August 2013 Sks23cuBase3MultStep4.png (file) 273 KB   2
10:31, 26 August 2013 Sks23cuBase3MultStep3.png (file) 267 KB   2
10:30, 26 August 2013 Sks23cuBase3MultStep2.png (file) 249 KB   2
10:28, 26 August 2013 Sks23cuBase3MultStep1.png (file) 261 KB   3
14:52, 25 August 2013 Sks23cuHilprechtDivStep13.png (file) 327 KB   1
14:51, 25 August 2013 Sks23cuHilprechtDivStep12.png (file) 284 KB   1
14:50, 25 August 2013 Sks23cuHilprechtDivStep11.png (file) 302 KB   1
14:50, 25 August 2013 Sks23cuHilprechtDivStep10.png (file) 304 KB   1
14:49, 25 August 2013 Sks23cuHilprechtDivStep09.png (file) 297 KB   1
14:49, 25 August 2013 Sks23cuHilprechtDivStep08.png (file) 308 KB   1
14:48, 25 August 2013 Sks23cuHilprechtDivStep07.png (file) 296 KB   1
14:48, 25 August 2013 Sks23cuHilprechtDivStep06.png (file) 298 KB   1
14:47, 25 August 2013 Sks23cuHilprechtDivStep05.png (file) 301 KB   1
14:46, 25 August 2013 Sks23cuHilprechtDivStep04.png (file) 292 KB   1
14:46, 25 August 2013 Sks23cuHilprechtDivStep03.png (file) 299 KB   1
14:45, 25 August 2013 Sks23cuHilprechtDivStep02.png (file) 299 KB   1
14:44, 25 August 2013 Sks23cuHilprechtDivStep01.png (file) 307 KB   1
13:46, 25 August 2013 Sks23cuHilprechtP28table.jpg (file) 486 KB   1
15:06, 22 August 2013 Sks23cu19e.png (file) 3 KB Negative token indicator 2. 1
15:05, 22 August 2013 Sks23cu19d.png (file) 3 KB Negative token indicator 1. 1
20:27, 15 August 2013 AbacusJakobKoebelsRechenbiechlinAugsburg1514.jpg (file) 514 KB monk Using Counting Board Abacus 1
19:23, 9 July 2013 Sks23cu-Soroban.jpg (file) 48 KB Reverted to version as of 12:30, 7 July 2010 3
02:24, 19 August 2012 Sks23cuConvertB10toB3.xls (file) 21 KB   1
15:55, 18 August 2012 Sks23cu D div+6by-2.png (file) 51 KB   2
15:55, 18 August 2012 Sks23cu C div-6by-2.png (file) 48 KB   2
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