Personal computer assembly courses have been recognized as being essential in helping students understand computer structure as well as the functionality of each computer component. In this study, a context-aware ubiquitous learning approach is proposed for providing instant assistance to individual students in the learning activity of a computer-assembly course. In addition to comparing the learning achievements and learning satisfaction of the students who learned with context-aware ubiquitous learning and conventional technology-enhanced instruction, the computer-assembling performance, cognitive load, learning perceptions, as well as the learning attitudes of the students are also discussed. It was found that those students utilizing context-aware ubiquitous learning achieved better effects than those with conventional technology-enhanced learning. Moreover, with context-aware ubiquitous learning, the field-independent students presented higher acceptance of cognitive load, and more positive learning experience, learning perceptions, learning satisfaction, and learning attitudes than the field-dependent students.