Four Operating Systems Dominate the Use of Handheld Computers Including

question 48

Short Answer

Four operating systems dominate the use of handheld computers including Windows Mobile, iPhone, Symbian and ____________________.

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Definitions:

Excitation Threshold

The voltage difference between a neuron’s interior and exterior that, if exceeded, causes the neuron to fire.

Action Potential

A temporary reversal of electric polarization of the membrane of a nerve cell or muscle cell, involved in the transmission of signals.

Nodes of Ranvier

Gaps in the myelin sheath of nerve fibers that facilitate the rapid conduction of electrical impulses along the neuron.

Myelinated Neuron

A nerve cell that features a myelin sheath around its axon, enhancing the speed of electrical transmission of signals.