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复数形式
comptometers
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计算器, 机械计算器
a mechanical calculator developed in the late 19th century, featuring multiple rows of keys corresponding to digits
A comptometer is an early type of mechanical calculator that was widely used for business and accounting purposes in the late 19th and early 20th centuries. It has a series of keys, each representing a number, and is used for performing arithmetic operations such as addition, subtraction, multiplication, and division. The comptometer works by pressing keys to input numbers, and the device then automatically performs the calculations. It was a significant advancement over earlier calculating devices, as it allowed for faster and more efficient calculations.
- In the early 20th century, offices relied on comptometers for fast and accurate calculations of financial data.
在20世纪初,办公室依靠计算器进行快速而准确的财务数据计算。
- The accountant efficiently computed large sets of numbers using a comptometer during the 1950s.
会计在20世纪50年代使用计算器高效地计算了大量数字。
- Before electronic calculators became widespread, operators were trained to use comptometers for accounting tasks.
在电子计算器普及之前,操作员被训练使用计算器进行会计任务。
- The comptometer's mechanical design allowed for high-speed calculations, making it a valuable tool in banking and finance.
计算器的机械设计允许进行高速计算,使其成为银行和金融领域的宝贵工具。
- Museums often display vintage comptometers as examples of early mechanical calculating machines.
博物馆经常展示老式计算器作为早期机械计算器的例子。