Modem, short for modulator-demodulator is an electronic device that converts a computer's digital signals into specific frequencies to travel over telephone or cable television lines. At the destination, the receiving modem demodulates the frequencies back into digital data. Computers use ...
Like prescription eyeglasses, contact lenses are medical devices that have to be correctly prescribed, carefully fitted, and properly maintained to help a person see clearly and comfortably.
Contact lenses like our eyes are exposed to environmental pollutants, bacterial contamination, and ...
