Which statement about ENIAC is true?

Which statement about ENIAC is true?

• A. It is a mechanical calculator
• B. It used integrated circuits
• C. It was completed in 1950
• D. It is one of the earliest electronic computers

Answer: (D)

ENIAC represents an early stage in computing where machines were built using vacuum tubes to perform calculations, making it electronic rather than mechanical. It was completed in the mid-1940s, long before the era of integrated circuits, and it was designed as a general‑purpose calculator, able to be reprogrammed for different tasks by wiring and setting switches rather than by stored software. This combination of being an early electronic, general-purpose computer is what makes it true to say it is one of the earliest electronic computers. The other statements don’t fit: it isn’t a mechanical calculator, it didn’t use integrated circuits, and it wasn’t completed in 1950.

ENIAC represents an early stage in computing where machines were built using vacuum tubes to perform calculations, making it electronic rather than mechanical. It was completed in the mid-1940s, long before the era of integrated circuits, and it was designed as a general‑purpose calculator, able to be reprogrammed for different tasks by wiring and setting switches rather than by stored software. This combination of being an early electronic, general-purpose computer is what makes it true to say it is one of the earliest electronic computers. The other statements don’t fit: it isn’t a mechanical calculator, it didn’t use integrated circuits, and it wasn’t completed in 1950.