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Reference.org
Asynchronous system
open-in-new
<p>The primary focus of this article is asynchronous control in digital electronic systems. In a <a href="/facts/Synchronous_system/k3yddBIN">synchronous system</a>, operations (<a href="/facts/Machine_code/bgdQ1Fxf">instructions</a>, <a href="/facts/Arithmetic_logic_unit/SgIjPzSc">calculations</a>, <a href="/facts/Sequential_logic/Rcs4thlu">logic</a>, etc.) are coordinated by one, or more, centralized <a href="/facts/Clock_signal/9UfTzGHx">clock signals</a>. An asynchronous system, in contrast, has no global clock. Asynchronous systems do not depend on strict arrival times of signals or messages for reliable operation. Coordination is achieved using <a href="/facts/Event-driven_architecture/THC25H6E">event-driven architecture</a> triggered by <a href="/facts/Network_packet/xCYf8SJu">network packet</a> arrival, changes (transitions) of signals, handshake protocols, and other methods. </p>