Editing Theoretical computer science (section)

===Very-large-scale integration===
{{main|VLSI}}
[[Very-large-scale integration]] ('''VLSI''') is the process of creating an [[integrated circuit]] (IC) by combining thousands of [[transistors]] into a single chip. VLSI began in the 1970s when complex [[semiconductor]] and [[communication]] technologies were being developed. The [[microprocessor]] is a VLSI device. Before the introduction of VLSI technology most ICs had a limited set of functions they could perform. An [[electronic circuit]] might consist of a [[central processing unit|CPU]], [[Read-only memory|ROM]], [[Random Access Memory|RAM]] and other [[glue logic]]. VLSI allows IC makers to add all of these circuits into one chip.