| David Hayden's Forum Info |
| Joined: |
12-01-2008 |
| Last Visit: |
12-16-2013, 08:17 AM |
| Total Posts: |
528 (0.1 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 |
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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 |
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