Why were early computers so much bigger than the ones we use now?

Question

A: People wanted to see all the parts clearly
B: They used bulky vacuum tubes
C: Vacuum tubes replaced transistors
D: Screens became smaller

Answer 1

The correct answer is B: They used bulky vacuum tubes.

Early computers were large primarily because they relied on vacuum tubes for their circuitry, which were bulky and required a lot of space. Later advancements in technology, such as the invention of transistors, allowed computers to become much smaller and more efficient.