Journal ArticleWe present a few unusual Micropipelines (Sutherland, CACM, September 1989) that employ the Muller C-ELEMENT or an extension of the C-ELEMENT called LOCKC (Liebchen and Gopalakrishnan, ICCD, 1992). We first describe two variations of the two-dimensional Micropipeline structure realized using ordinary C-ELEMENTs. These micropipelines can be used to control wavefront arrays (S.-Y.Kung et.al, IEEE Computer, 1987). Next, we present a ring style arbiter realized using a LocKC-based one-dimensional micropipeline. Finally, we present a solution to the symmetric crossbar arbitration problem posed by Tamir and Chi (IEEE Trans. Parallel and Dist Systems, Jan '93) using a circuit that employs the two-dimensional micropipeline as well as the LOCKC. We present various circuits to solve the symmetric crossbar arbitration problem, including ones that consume very little power when idling
