asynchronous logic การใช้

• "' Asynchronous logic "'is the logic required for the design of asynchronous digital systems.
• Moreover, some of the nation's best computer designers are outright skeptics about asynchronous logic.
• The same is true with asynchronous logic, he said.
• Additionally, some longtime computer designers are beginning to use asynchronous logic to solve thorny problems.
• Philips has also actively pursued research into asynchronous logic.
• However, asynchronous logic is more difficult to design and is subject to problems not encountered in synchronous designs.
• Asynchronous logic components can be hard to design because all possible states, in all possible timings must be considered.
• This avoids cumbersome asynchronous logic and makes the control signals behave consistently at a wide range of clock frequencies.
• The tiny community of asynchronous logic proponents is made up of small academic and corporate research teams like Sutherland's and several small start-up companies.
• Event simulation also has the advantage of greater flexibility, handling design features difficult to handle with cycle simulation, such as asynchronous logic and incommensurate clocks.
• There was a separate prefetch / instruction formatting unit ( again, using stoppable delay line clocks for synchronization . . . asynchronous logic allows for skewed timings ).
• Gordon Bell, the designer of Digital Equipment's VAX computer architecture in the early 1970s, said that he was doubtful whether asynchronous logic would ever achieve a following outside of the research community.
• He came with the intention of finding new ways to speed up computing, and built a small team with the goal of pioneering a set of technologies to make asynchronous logic a viable option for computer designers.
• Without such careful design, it is easy to accidentally produce asynchronous logic that is " unstable, " that is, real electronics will have unpredictable results because of the cumulative delays caused by small variations in the values of the electronic components.
• Its approach, which uses a technique known as asynchronous logic, differs from conventional computer circuit design in that the switching on and off of digital circuits is controlled individually by specific pieces of data rather than by a tyrannical clock that forces all of the millions of the circuits on a chip to march in unison.