Three “domains” of creating these things that converge as they become concrete are depicted in the Gajski-Kuhn Y chart. The method of logical effort helps ballpark sizing decisions for parts of these things that are later quantized in units of lambdas in stick diagrams. Halos and abutment lower the utilization ratio of these things, which is determined during floorplanning. Going “full custom” (15[2])is an alternative to using standard cells, which are building blocks for these things. Carver Mead and Lynn (*) Conway pioneered a “revolution” in creating these things. (10[1])Derivatives of the SPICE program are made by (-5[1])Synopsys and Cadence, basically the only two suppliers of E·D·A software for making these things. Synthesis transforms an R·T·L description of these things written in a language like SystemVerilog to a specification (10[1])of logic gates. (10[1])For 10 points, (-5[1])name these things produced in semiconductor (10[1])fabs. (10[1])■END■ (10[1]0[1])