When you see our analog model, you'll understand.

In most, but not all cases, digital handsets operate at lower power levels than analog models.

Bell Atlantic Mobile will give customers a $30 to $50 credit toward a digital phone if they turn in their analog models.

As digital cell phones catch on, what happens to the old, unused analog models?

In conventional hearing aids, known as analog models, the sound is converted to an electrical signal but never to a digital one.

Though many such analog models are still produced, modern digital technology is available to reduce the risk of eavesdropping.

An electrical analog model uses a different set of variables, namely, voltage and current.

And digital phones, which are rapidly replacing analog models, use even less.

At this time a new analog model is calculated to be used for the next simulation period.

Later analog models had a second or third channel displayed in the same screen, usually to monitor respiration movements and blood pressure.