First Generation Computer Characteristics

Computers from the first generation were characterized by their foundational technology and physical attributes.

• Core Technology: This era utilized vacuum tubes as the primary electronic component for processing and switching.
• Physical Size: Due to the large size of vacuum tubes and associated components, these computers were extremely bulky, often occupying entire rooms.
• Cost Factor: The complex manufacturing, high power consumption, and frequent maintenance requirements associated with vacuum tubes made these machines very costly.

Therefore, the description 'bulky, vacuum based and costly' accurately points to the first generation of computers.