[分享]50 MHz frequency meter using PIC 16F84(完整实例)

cdcll · 发表于 2004-4-29 21:40:27

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[这个贴子最后由cdcll在 2004/04/29 09:50pm 第 1 次编辑]

General Description:
It is a nice frequency counter that reads frequency from 1 Hz to 50 MHz and displays it on a 16 character LCD display. Auto-range feature provides floating decimal point and automatic placement of suffix (Hz, KHz, or MHz). Gate speed automatically decreases to one second below 100 KHz to display frequency with a resolution down to an amazing 1 Hz.
·Auto-ranging with floating decimal point.
·Up to 7 digits displayed.
·Auto-adjusting gate speed (0.1 sec to 1 sec).
·Microcontroller-based circuitry provides for simplicity, ease of assembly, and highly stable readout.
·Sensitivity approximately 100 mV RMS (100 Hz to 2 MHz), 800 mV RMS @ 50 MHz.
·Input overload protected.

cdcll · 发表于 2004-4-29 21:44:02

LBHIDDEN[0]LBHIDDEN原理图（for reference only）

cdcll · 发表于 2004-4-29 21:51:47

LBHIDDEN[0]LBHIDDENsource code(for reference only)

ezm · 发表于 2005-12-30 04:31:01

我想看原理图

ezm · 发表于 2005-12-30 04:32:03

怎么不能看啊

一介布衣 · 发表于 2006-9-4 11:49:43

不错啊

jdyuxuan · 发表于 2006-9-7 13:33:32

good! 3ks!

pedro888 · 发表于 2006-10-11 23:52:16

thanks for your information...
thanks.....

wang4657 · 发表于 2006-10-20 11:24:58

解析度看起來不錯

lcos · 发表于 2006-10-20 17:07:33

很不错的东西。

[分享]50 MHz frequency meter using PIC 16F84(完整实例)

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