1. 引言
随着科技的不断发展，单片机在嵌入式系统中的应用越来越广泛。STC51单片机因其成本低、性能稳定、开发方便等特点，成为初学者学习嵌入式技术的首选。本文将详细介绍如何使用STC51单片机打造一个简易计算器，包括电路图详解和DIY步骤解析。
2. 硬件选型
在制作简易计算器之前，我们需要准备以下硬件：
- STC51单片机（如STC89C52）
- 键盘模块（4x4矩阵键盘）
- 显示模块（LCD1602或数码管）
- 电源模块（5V直流电源）
- 连接线、电阻、电容等
3. 电路图详解
以下是简易计算器的电路图：
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