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STD 基于90C52的时钟+万年历
Mode: Editors' pick
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Update time：
2021-04-10 12:34:06
Creation time：
2016-01-22 03:08:51
Description
本项目为90C52主控，DS1302时钟芯片，DS18b20温度检测。最终可大字显示时间，日期（可显示阴历），实时温度。并可设置闹钟。![enter image description here][1]
[1]: /editor/20160122/56a1a127846fc.jpg
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| ID | Name | Designator | Quantity |
|---|---|---|---|
| 1 | AT89C51 | U1 | 1 |
| 2 | XTAL | Y1 | 1 |
| 3 | 普通电容 | C1,C2,C4 | 3 |
| 4 | CON20 | J1 | 1 |
| 5 | CON4 | J2 | 1 |
| 6 | 微动开关 | S1 | 1 |
| 7 | CON4 | J3 | 1 |
| 8 | 1k | R1 | 1 |
| 9 | 10k | R2,R4,R5 | 3 |
| 10 | 10uf | C3 | 1 |
| 11 | 微动开关 | S6,S2,S3,S4,S5,S7,S8 | 7 |
| 12 | DS18B20 | U9 | 1 |
| 13 | 4.7K | R21 | 1 |
| 14 | 5.1k | R22,R23,R24 | 3 |
| 15 | DS1302 | U8 | 1 |
| 16 | 20pf | C13,C12 | 2 |
| 17 | ECAP | C14 | 1 |
| 18 | battery | * | 1 |
| 19 | CON9 | J4 | 1 |
| 20 | 可变电阻 | R3 | 1 |
| 21 | CON3 | J5 | 1 |
| 22 | PNP | Q1 | 1 |
| 23 | SPK | ! | 1 |
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