算盤 Abacus Tutorial - How to use an Abacus. Japanese, Chinese abacus techniques. Page 1 of 27 ABACUS: MYSTERY OF THE BEAD ▪ Title Page ▪ Abacus Techniques ▪ Addition…

1. ABACUS: MYSTERY OF THE BEAD ▪ Title Page ▪ Abacus Techniques ▪ Addition ▪ Subtraction ▪ Multiplication ▪ Division ▪ Division Revision ▪ Negative Numbers…

Slide 1 M150 – U NIT 6 D ATA, C OMPUTING AND I NFORMATI 1 Haifaa Elayyan Slide 2 AO U Leb. - F08 - M15 0 - Unit 6 2 U NIT 6: F IVE T HEMES  Unit 6 sets the scene by…

Slide 1 A little bit of history Jordi Cortadella Department of Computer Science 1 Mechanization Introduction to Programming © Dept. CS, UPC 2 2 Mechanization Introduction…

M150 – UNIT 6 DATA, COMPUTING AND INFORMATI * Haifaa Elayyan Haifaa Elayyan AOU Leb. - F08 - M150 - Unit 6 * UNIT 6: FIVE THEMES Unit 6 sets the scene by providing you…

The Möbius Strip or The Möbius Band Abaci (or Abacuses) a brief history Mesopotamian (2700-2300 BC) There is evidence that abaci were used here for addition and subtraction.…