Before revision: Simulation was initially done by simulating logic gates in chips but later on , RTLs in chips were simulated URL Simulation is still used when creating analog chip URL Prototyping platforms are used to run software on prototypes of the chip design while it is under development using FPGAs but are slower to iterate on or modify and can't be used to visualize hardware signals as they would appear in the finished design.
After revision: Simulati was initially done by simulating logic gates in chips but later on , RTLs in chips were simulated URL Simulation is still used when creating analog chip URL Prototyping platforms are used to run software on prototypes of the chip design while it is under development using FPGAs but are slower to iterate on or modify and can't be used to visualize hardware signals as they would appear in the finished design.