The phrase "a computer which allows" is correct and usable in written English.
It can be used when describing the functionality or capabilities of a computer in relation to a specific action or feature.
Example: "I recently purchased a computer which allows me to run multiple virtual machines simultaneously."
Alternatives: "a computer that enables" or "a computer capable of".
The kitchen is fitted with a computer which allows users to select the French recipes they want to follow.
In less than 90 seconds, the data is passed through to a computer, which allows the team to analyze the performance and instantly adjust a workout.
The template-based experiment is easy to simulate on a computer, which allows testing of larger population sizes, genomes, and generation span.
Both procedures have been written in Turbo-Pascal language on a personal computer, which allows a reduction in the execution time.
The substrate was mounted onto a programmable XY stage (Yokogawa Inc., Tokyo, Japan), controlled by a personal computer, which allows movement of the sample during nanofiber deposition.
It is run by a portable notebook computer which allows the operator to predetermine the area in which flow is to be sampled.
The test rig is equipped with a load cell connected to a data acquisition PC computer, which allows the most important dynamic and kinetic parameters, such as the contact force, load time response, impactor velocity and energy to be measured.
KAREN L. STEVENSON, a lawyer in Los Angeles, on Google's wearable computer, which allows users to take photos and film snippets.
Consider installing an asymmetric email encryption program such as "Pretty Good Privacy" (PGP) on your computer, which allows you to encrypt and decrypt your email over the Internet.
His tools of deceit were a cellphone and a laptop computer -- which allowed him to blur his true whereabouts -- as well as round-the-clock access to databases of news articles from which he stole.
The pressure transducers were connected to a 6-channel data logger (Almemo 8990-8, Holzkirchen, Germany) and to a personal computer, which allowed simultaneous recordings.
