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Microcomputer from Honeywell Thermostat Controller

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rjluna2



Joined: 27 Oct 2014
Posts: 1302
Location: Hiram, GA, USA
PostPosted: Sat Sep 01, 2018 12:59 pm    Post subject: Microcomputer from Honeywell Thermostat Controller Reply with quote
We recently retired the 1992 vintage Honeywell thermostat controller due to batteries/power issues. I took the liberty to take it apart and found this NEC D7503G 4-Bit Microcomputer reportedly from various website:
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CPUShack



Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
PostPosted: Sat Sep 01, 2018 3:23 pm    Post subject: Reply with quote
Very cool!
Funny where ya find MCUs
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