What was a significant limitation of the first computers?

The significant limitation of the first computers was that they required a large amount of electrical power. Early computers, such as the ENIAC and others developed during the mid-20th century, were very power-hungry due to their vacuum tube technology and other components that consumed substantial amounts of electricity. This made them less practical and accessible for widespread use, as their high power requirements could lead to increased operational costs and logistical challenges for installation and maintenance.

In contrast, while early computers could indeed perform multiple tasks to some extent, their multitasking capabilities were very limited compared to modern standards. Additionally, they did have some ability to store data, often on punch cards or magnetic tape. Also, affordability was a significant issue; these early computers were quite expensive and not within the financial reach of average consumers, making them primarily available to large organizations, government agencies, and universities. Thus, the need for substantial electrical power stands out as a crucial limitation of the early computer era.