09
Interface devices consisting of analog and digital ports,
audio ports, internal temperature sensor, internal
microphone, memory card slot, color touch screen, keypad,
rechargeable battery pack, and data collection and analysis
software used with external and internal components to
collect, analyze, and graph measurements of temperature,
barometric pressure, magnetic fields, pH levels, flow rate,
acceleration, gas pressure, force, dissolved oxygen,
electrode amplification, chloride ion, ammonium ion, calcium
ion, nitrate ion, oxidization and reduction, oxygen gas,
light, ultraviolet light, voltage, current, conductivity,
electronic charge, humidity, soil moisture,
electrocardiograph level, sound level, voltage
amplification, salinity, turbidity, grip strength, airflow,
lung volume, respiration, heart rate, and other scientific
data, which can be connected to a computer or used as
stand-alone devices, for use in elementary school, junior
high school, high school, and college science and math
laboratories and classrooms
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