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Digital Circuits of the 90's
| Optical Proximity Switch, pdf |  |
| Digital Comparator 74HC85, pdf | |
| Profile Controller, pdf | |
| Quad analog input switch logic, pdf | |
| Optical switch for water tap using LM555 and LM567, pdf | |
| diff input DS8830 to TTL convertor, pdf | |
| security gaurd duty monitor, 4017, pdf | |
| security gaurd duty monitor, 74373, pdf | |
| security gaurd duty monitor, drivers, pdf | |
| security gaurd duty monitor, 555, pdf | |
| security gaurd duty monitor, clock, pdf | |
| security gaurd duty monitor, supply, pdf | |
| security gaurd duty monitor, ram, pdf | |
| security gaurd duty monitor, module, pdf | |
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