David Hayden
(Senior Member)


Registration Date: 12-01-2008
Date of Birth: Not Specified
Local Time: 09-15-2019 at 07:55 PM
Status: Offline

David Hayden's Forum Info
Joined: 12-01-2008
Last Visit: 12-16-2013, 08:17 AM
Total Posts: 528 (0.13 posts per day | 0.3 percent of total posts)
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Total Threads: 40 (0.01 threads per day | 0.18 percent of total threads)
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Time Spent Online: None Registered
Members Referred: 0

David Hayden's Contact Details
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Additional Info About David Hayden
Location: Central New Jersey, USA
Bio: HP 41 series, HP 29C, H49 series, improving the usability of calculators