算器一般由运算器、控制器、存储器、键盘、显示器、电源和一些可选外围设备组成。低档计算器的运算器、控制器由数字逻辑电路实现简单的串行运算，其随机存储器只有一、二个单元，供累加存储用。高档计算器由微处理器和只读存储器实现各种复杂的运算程序，有较多的随机存储单元以存放输入程序和数据。

-Solvers generally computing, controller, memory, keyboard, monitor, power, and some optional peripheral equipment components. Calculator calculator low, the controller realized by a simple digital logic circuit serial operation, the random access memory only one or two units for incremental storage use. High-end calculators from the microprocessor and read-only memory operations to achieve a variety of complex procedures, there are more random access memory unit to store programs and data input.