โปรแกรมนี้เป็นโปรแกรมที่ให้ผู้ใช้ได

This program is a program that allows the user to practice used to calculate the check digit, the program proceeds to set up the program to get results like the timer according to the difficulty level of the program: Easy level: 30 seconds to solve the problem of 4 numbers. Medium: 20 video NA in solution 4 numbers. Level of difficulty: 25 seconds, 5 figures.

This program is a program that allows users to train operators to calculate the numbers. The program established A result of the program. The timer on the difficulty level of the
class is simple: to take 30 seconds to solve four digits
moderate: a time of 20 seconds in the solution four digits
level of difficulty: Take 25 seconds to fix. 5 digits

This program is a program that allows the user to practice use calculator mark operations on numbers, the program set up to the capable program needs. By the timer according to the difficulty level of the program as follows:
easier levels:Give 30 seconds in the solution 4 numbers
level: give 20 seconds in the solution 4 numbers
level hard: give 25 seconds to solve the problem 5 numbers
.