What health problem is common among people who spent a lot of time sitting at computer desks?

Верно ли утверждение:

Back problems are common among people who spent a lot of time sitting at computer desks.

Верно ли следующее утверждение:

Video calls accounted for about 80% of the 95 billion minutes that people spent on Skype in the first half of this year.

What will be a problem until common standards and protocols emerge for machine-to-machine and wireless sensor communications?

In computer addiction, what do people become addicted to?

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Many people are literally addicted to a computer as a physical object.

Верно ли следующее утверждение:

Until common standards and protocols emerge for machine-to-machine and wireless sensor communications, costs of wireless will be a problem.

Do computer prices go down with time?

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Computer-Aided Design is also sometimes referred to as computer assisted drafting.

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Hiding the extent of computer use from family and friends is a sign for computer addiction.

Besides for your normal monthly ISP fee, there is usually a small charge for computer-to-computer calls.