silicon wafers three types -empty grey wafer,purple wafer with sio film and gold wafes with microchips

wafer silicon semiconductor computer industry micro microchip science substrate technology wafers circuit close up devices disc electrical electronics fine detail graphic industrial integrated circuits macro microcircuits photovoltaics printed background round slice fabrication polysilicon white basic capacity chips crystalline development factory future group high isolated manufacturing material microchips microelectronic polycrystalline production nanoelectornics photolithography