A computer is a device that stores, organizes, and displays information, calculates data, and processes commands input by sentient users.
The duotronic computer was invented by Doctor Richard Daystrom in 2243 and became the primary computing platform for all Starfleet vessels for the next eighty years.
The M series multitronic system, also invented by Doctor Daystrom, was the first attempt at placing a fully independent AI (artificial intelligence) system on a starship. The first four multitronic units were failures, but the fifth generation (dubbed M-5) was the first considered advanced enough for actual field testing. Unfortunately, M-5's field test was a failure as well, and no further tests were conducted. The project was later abandoned.
In 2329, Starfleet began to adopt a new system of computing using isolinear optical chips.
Bio-neural circuitry is prone to certain bacterial and viral infections, along with subnucleonic radiation.
Positronics are used in advanced forms of computer systems. Its electromagnetic signature is only found in Soong-type androids.