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  1. #1
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    Have you ever looked at your digital thermometer and wondered when that extremely high or extremely low temperature was recorded. There's no need to dwell in doubt anymore. Here's the answer to your prayers: A thermometer which maintains 90 lists of high extremes and low extremes temperatures including the time and date of every recording. For a complete description of all of the lists go to This thermometer gives the answer to inevitable questions like: What was the 181st lowest temperature between 10 am and 6 pm, during the past 6 months, and when was it recorded (date, hour and minute). Or more normal questions like: What was today's high, the highest temperature ever recorded or the hottest or coolest temperature respectively the past summer or winter. All temperature data is stored on fix memory addresses in external NV-SRAM so no temperature data is lost even if the power cord is pulled out. Tech-Talk: Mega32 (28 kb used, 5160 lines of c-code) Temp. sensor LM35C (+-0.2 deg. Celsius), ADC MCP3201 (12 bit, VRef_min 0.25V), LCD L1634-00J 16x4, 4 push buttons, External NV-SRAM DS1230Y-200, Power: 9V regulated/stabilized DC adaptor and 78L05. The software (including the hex-file) and schematic is at



  3. #2
    Senior Member misterphotoshop's Avatar
    Join Date
    Jul 2004
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    r we supposed to give u c&c or sumthin?

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