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11. Clockless chip Technology Seminar Report pdf, ppt
Branch : ECE, CSE
Clockless chips are electronic chips that are not using clock for timing signal. They are implemented in asynchronous circuits. An asynchronous circuit is a circuit in which the parts are largely autonomous. They are not governed by a clock circuit or global clock signal, but instead need only wait for the signals that indicate completion of instructions and operations. These signals are specified by simple data transfer protocols. This digital logic design is contrasted with a synchronous circuit which operates according to clock timing signals.
The term asynchronous logic is used to describe a variety of design styles, which use different assumptions about circuit properties. These vary from the bundled delay model - which uses 'conventional' data processing elements with completion indicated by a locally generated delay model - to delay-insensitive design - where arbitrary delays through circuit elements can be accommodated. The latter style tends to yield circuits which are larger and slower than synchronous (or bundled data) implementations, but which are insensitive to layout and parametric variations and are thus "correct by design."
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