The TI-84 was worth it for how much easier it made doing assignments. The extra screen space and the ability to easily edit the equations you entered and recall

The TI-84 was worth it for how much easier it made doing assignments. The extra screen space and the ability to easily edit the equations you entered and recall past entry probably saved me hundreds of hours. Just need to make sure I was proficient enough with my Casio scientific calculator for tests and exams.