Tandem

n. two-wheeled carriage pulled by two horses harnessed one behind the other; team of horses harnessed in single file; vehicle having parts arranged one behind the other; bicycle for two riders

adv. one after another

adj. coming one after another

Tandem is a Latin adverb meaning "at length" or "finally". In English, the term was originally used for two or more draft horses harnessed one behind another as opposed to side-by-side. By extension the term now refers to any team (of machines, animals or people) working together one behind another.
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Tandem Computers was an early manufacturer of fault tolerant computer systems, marketed to the growing number of transaction processing customers who used them for ATMs, banks, stock exchanges and other similar needs. Tandem systems used a number of redundant processors and storage devices to provide high-speed "failover" in the case of a hardware failure, an architecture that they called NonStop. Over the two decades from the 1970s into the mid-90s, Tandem systems evolved from custom hardware to commodity CPU designs. The company was eventually purchased by Compaq in 1997 in order to provide that company with more robust server offerings. Today it is still known as NonStop, as a separate product line offered by Hewlett-Packard.
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Noun
1. a bicycle with two sets of pedals and two seats
(synonym) bicycle-built-for-two, tandem bicycle
(hypernym) bicycle, bike, wheel, cycle
Adverb
1. one behind the other; "ride tandem on a bicycle built for two"; "riding horses down the path in tandem"

n. tandem, bicycle for two riders

n. tandem, two-wheeled carriage pulled by two horses harnessed one behind the other; team of horses harnessed in single file; vehicle having parts arranged one behind the other; bicycle for two riders