Discrete Logic Gates: Semi-custom design puts millions of them all on one die.
Standard cell designs use a set of well-proven logic cells on the chip, much in the way that previous generations of standard logic have been used as board-level products, such as Texas Instruments' System 74.
A library of standard logic functions is provided. Cells are placed on the chip and wired up by the user, in the same way that chips are placed on the PCB.
| 5: (C) 2008-18, DJ Greaves, University of Cambridge, Computer Laboratory. |