Examlex
Operational support systems are different from transaction processing systems.
Encryption
The process of converting information or data into a code, especially to prevent unauthorized access.
Radio
A technology that uses radio waves to transmit information, such as audio, by modulation of electromagnetic waves.
Microwave
An electromagnetic wave with a wavelength shorter than that of a normal radio wave but longer than those of infrared radiation, commonly used in microwave ovens and communication technologies.
Satellite
A man-made device launched to circle the Earth or other planets for the purpose of gathering data or facilitating communication.
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