silicon chip 
noun
A tiny wafer of silicon used to make an integrated circuit; a microchip.Each processor is constructed on a single silicon chip, so the supercomputer is essentially 12, 288 interconnected chips....
- Much of our electronics could soon be replaced by photonics, in which beams of light flitting through microscopic channels on a silicon chip replace electrons in wires.
- Chips are now so small that atomic-level defects on a silicon chip can cause power leakage up to 100 times the normal level, he said.