| 基于单片机和555定时器的A/D转换器设计 |
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| 引用本文： | 肖丽仙. 基于单片机和555定时器的A/D转换器设计[J]. 国外电子元器件, 2006, 0(12): 18-20 |
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| 作者姓名： | 肖丽仙 |
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| 作者单位： | 楚雄应用技术学院,云南,楚雄,675000 |
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| 摘 要： | 为克服在A/D转换中输入电压范围窄的问题,介绍了一种采用单片机AT89C51和NE555定时器构成的A/D转换器.详细分析了其工作原理和A/D转换的特性.该A/D转换器对低频输入信号在较高电压范围内具有一定的实用价值.
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| 关 键 词： | 单片机 A/D转换 AT89C51 NE555 |
| 文章编号： | 1006-6977（2006）12-0018-02 |
| 收稿时间： | 2006-08-02 |
| 修稿时间： | 2006-08-02 |
Design of A/D converter based on microcontroller unit and 555 timer |
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| XIAO Li-xian. Design of A/D converter based on microcontroller unit and 555 timer[J]. International Electronic Elements, 2006, 0(12): 18-20 |
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| Authors: | XIAO Li-xian |
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| Affiliation: | Chuxiong Application and Technology College, Chuxiong 675000, China |
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| Abstract: | Aiming at solving the problem of narrow input voltage range in A/D converter,A/D converter based on microcontroller and 555 timer was introduced. The theory and characteristics of A/D converter are analyzed.The A/D converter is of some applied value to low frequency and high voltage input signals within a wide input voltage range. |
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| Keywords: | mieroeontroller A/D converter AT89C51 NE555 |
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