Touch screen data recording capacity calculation - Database & Sql Blog Articles

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The MP27710.4 screen records 8 temperature data points every 3 seconds. How many days can it record using an MMC128MB card? Here's a simple way to calculate it:

Formula: N (Tags) × N (Data Type in Bytes) × 24 hours/day × 3600 seconds/hour ÷ 3 seconds per point ÷ 1024 ÷ 1024 = Result in MB.

For example, if you have 8 data points, each 4 bytes in size, the storage required for one day would be approximately 0.8789 MB.

With a 128MB card, the estimated recording duration would be around 128 ÷ 0.8789 ≈ 145 days.

This is a simplified calculation. In practice, additional file headers and system overhead may take up some space. So, 100 days should be safe.

Also, remember that MB stands for Megabytes, not Mb (Megabits). The calculation above is based on MB, so the result is accurate in terms of actual storage capacity.