digital thermometer - with either LCD or LED display

2-44 — elektor february 1980 digital thermometE In principle, the AY-3-1270 is a digita voltmeter, with display drive capabilitm for the range from —399 to +399 Obviously, any other physical quantit" can be measured and displayed - provided a suitable sensor is available For temperature measurement, an NTC resistor can be used; a useful measure ment range is from —39.9°C to +39.9°C (approximately —40°F to +104°F). Fo low temperature measurements only - in a (deep) freezer, for instance — the range can be set from —39.9°F tc +39.9°F. The IC also has two switching outputs one switches when the temperature rise above a preset temperature; the othe when the temperature drops below it digital thermometer with either LCD or LED display As more and more electronics is squeezed onto integrated circuit "chips", it becomes increasingly attractive for manufacturers to add relatively inexpensive "features" to all kinds of domestic equipment. Programmable timers in ovens and ...