Final answer:
Lenovo is the largest computer manufacturer among the options provided. HP and Dell follow closely in personal computer shipments. Apple, known for design, utilizes parts from suppliers like Samsung and assembly from companies like Foxconn.
Step-by-step explanation:
The largest manufacturer of computers among the choices given, which are Dell, HP, Apple, and Lenovo, is Lenovo. Apple, while a major player in personal computing, specializes in high-end consumer electronics and is more widely known for its iPhones, although it does produce personal computers like the MacBook. It's important to note that Apple's strength lies in the brand's design and consumer experience, not in manufacturing components; companies like Foxconn assemble their products, and firms like Samsung supply parts.