time division multiplexing; a method of transmitting multiple signals over a single channel by dividing the signal into different time slots

wavelength division multiplexing; a technology used in fiber-optic communications to send multiple signals over a single fiber using different wavelengths of light

The execution of multiple tasks or computer processes at the same time

to transmit multiple signals or streams of information over a single channel at the same time

a device that combines multiple signals into one signal over a shared medium; multiplexor