Asynchronous - Revision history

Jnc: Improve the description a bit

2024-03-29T17:43:10Z

Improve the description a bit

Jnc: +cat

2018-12-14T19:58:24Z

+cat

Jnc: :Proper cat

2018-10-21T13:41:39Z

:Proper cat

Jnc: A start

2018-03-26T16:44:04Z

A start

New page

'''Asynchronous''' is a term which means that some event, or device, does not operate with a clock, or on fixed timing.

Contemporary logic design is usually [[synchronous]], where a clock signal is used to control when everything changes, but older logic systems were often asynchronous, without use of a clock.

When an incoming signal may change value at any time, relative to a clocked circuit, that signal is said to be asynchronous with respect to that circuit. An [[synchronizer]] must be used to bring the external signal's timing into the clocked circuit.

[[Asynchronous serial line]]s do not have a clock to indicate timing of data, and the time between two characters sent on such a line may vary arbitrarily.

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 '''Asynchronous''' is a term which means that some event, or device, does not operate with a clock, or on fixed timing.
-Contemporary logic design is usually [[synchronous]], where a clock signal is used to control when everything changes, but older logic systems were often asynchronous, without use of a clock.
+Thus, elements in asynchronous [[logic]] system respond to events 'upstream' in the logic network, not to an external control which imposes synchronizing timing. Contemporary logic design is usually [[synchronous]], where a clock signal is used to control when everything changes, but older logic systems were often asynchronous, without use of a clock.
-When an incoming signal may change value at any time, relative to a clocked circuit, that signal is said to be asynchronous with respect to that circuit. An [[synchronizer]] must be used to bring the external signal's timing into the clocked circuit.
+When an incoming signal may change value at any time, relative to a clocked circuit, that signal is said to be asynchronous with respect to that circuit. A [[synchronizer]] must be used to bring the external signal's timing into the clocked circuit.
-[[Asynchronous serial line]]s do not have a clock to indicate timing of data, and the time between two characters sent on such a line may vary arbitrarily.
+[[Asynchronous serial line]]s do not have a clock to indicate the timing of data, and the time between two characters sent on such a line may vary arbitrarily.
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 [[Category: Theory]]

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	[[Asynchronous serial line]]s do not have a clock to indicate timing of data, and the time between two characters sent on such a line may vary arbitrarily.		[[Asynchronous serial line]]s do not have a clock to indicate timing of data, and the time between two characters sent on such a line may vary arbitrarily.
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