KoAbacus - Mental Arithmetic 1.0

KoAbacus 1.0.53 - Korean Abacus & Mental Arithmetic

The abacus is a calculating tool with a rich history that predates the modern numeral system. It remains integral in the daily operations of merchants, traders, and clerks across various regions, including Asia and Africa.

• Button function:
  1. 6, 5, 4, 3, 2, 1: Represents positional numbers
  2. +, -, x, /: Includes the four fundamental arithmetic operations along with new number generation
  3. 9, 8, 7, 6, 5: Defines bounds
  4. stat & end: Indicates the result

• Menu Button:
  • Auto Test: Options for Count and Delay
  • Speech: Features for Start, End, +, -, *, /
  • Sound: Click Sound settings

• Start Button LongClick - Clears the Abacus
• Menu Button LongClick - Enables Volume Control (4.0 ~)
• [-], [x], [/] button LongClick - Activates Auto Mental Arithmetic