1. 莱布尼茨计算器：
莱布尼茨计算器也称为莱布尼茨轮或阶梯鼓。它是一种圆柱体，以一组长度递增的齿的形式存在，可以添加到计数轮上。可用于一类机械计算器的计算引擎。
在莱布尼茨计算器中，可以执行许多加、减、乘、除等功能。它更快更耗时。它可以轻松地进行计算。
2. 帕斯卡的计算器：
它是一种机械计算器，通常借助其中的齿轮来表示每个数字的位置。这样做的主要目的是直接对两个数进行加减运算，也可以通过重复加减法进行乘除运算。它由金属制成。数字的计算是通过顺时针转动轮子来完成的。
帕斯卡林计算器和莱布尼茨计算器的区别：
| PASCAL’S CALCULATOR | LEIBNIZ CALCULATOR |
|---|---|
| It can only do addition and subtraction. | It is also called a Leibniz drum. |
| The Pascaline size is the same as the shoebox and because of this drumsit can be carried easily. | In this, there are many functions like addition, subtraction, multiplication, and division are being performed. |
| Pascal calculator has eight different windows on the top of it. | It can do calculations very easily. |
| Inside the pascal calculator the small drum is seen with the digits of the result. | It can be used in the calculating engine of a class of mechanical calculators. |
| In the pascal calculator, Each of its drum is made up of two different number of rows. | It is the type of calculating machine which is called as Step Reckoner. |
| There are 8 adjustment mechanisms in the front of each window. | Leibniz was a strong advocate of the binary system. |
| The wheels will move according to the positions as they correspond to the value of the corresponding digit. | Leibniz calculator is also known as the first true four-function calculator. |
| It uses a wheel for calculation. | It works faster and in a speedier way. |
| It is slower in speed. | It is faster in speed. |
| The calculations are being done by turning the wheels clockwise. | It is time-consuming. |