or microcircuit or chip or microchip
Assembly of microscopic electronic components ( transistor s, diode s, capacitors, and resistors) and their interconnections fabricated as a single unit on a wafer of semiconducting material, especially silicon.
Early ICs of the late 1950s consisted of about 10 components on a chip 0.12 in. (3 mm) square. Very large-scale integration (VLSI) vastly increased circuit density, giving rise to the microprocessor . The first commercially successful IC chip (Intel, 1974) had 4,800 transistors; Intel's Pentium (1993) had 3.2 million, and more than a billion are now achievable.