The phrase "a computer to calculate" is correct and usable in written English.
It can be used when referring to the purpose of a computer, specifically for performing calculations or computations.
Example: "We need to purchase a computer to calculate complex mathematical equations for our research project."
Alternatives: "a computer for computation" or "a computer for calculations".
The simplified system was developed so doctors and patients would not need a computer to calculate heart attack risk.
Dr. Pierce and her colleagues used a computer to calculate the most likely relationships among the butterflies.
Along with W.J. Eckert, he developed a method of calculating orbit corrections (1937) that has been widely accepted, and, with Eckert and G.M. Clemence (1951), Brouwer was the first to use a computer to calculate planetary positions accurately.
You use a computer to calculate the product of a couple of 6 digit numbers; the computer comes up with a certain number n.
The data were then input into a computer to calculate the flow features of particles (hollow glass slivered beads with μm diameter).
The captured images are processed by a computer to calculate the optical wavefront errors.
Logic circuits, made of qubits directly harnessing the weirdness of superpositions, allow a quantum computer to calculate vastly faster than anything existing today.
The recent rapid progress of performance of computers has allowed an inexpensive personal computer to calculate a task performed conventionally within a workstation.
It takes 20 s on a Compaq Presario 2700 1.13 GHz computer to calculate net solar energy collection per unit area for one solar collector design using each of two selective absorbers at five fixed absorber temperatures for all the daylight hours of 1 year at one location.
We could use a large number of idle computers to calculate a complex problem, and the running-time is inversely proportional to the number of the computers.
Inertial navigation systems (INS) are a navigation aid that employs accelerometers (motion sensors), gyroscopes (rotation sensors), and a computer to constantly calculate the position, velocity, and orientation (i.e., direction and speed of movement) of a moving target without any need for external references.
