Abstract
The author describes a low-cost battery-powered instrument based on the c-mos Motorola MC146805 E2P microprocessor. In this instrument the input is sampled repetitively and compared with a table of values stored in memory, so that over time, a distribution of the sampled input is built up in 21 internal memory channels (20 channels plus 1 'over-range' channel). The program controlling the microprocessor can be adapted to suit different needs by simply changing the values stored in this table, and/or by changing the measuring period.
| Original language | English |
|---|---|
| Pages (from-to) | 37-40 |
| Number of pages | 3 |
| Journal | Electronics & Wireless World |
| Volume | 90 |
| Issue number | 1576 |
| Publication status | Published - Jan 1984 |
Keywords
- sampling frequency meter
- electric batteries
- microprocessors
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