Question

how did the us computer eniac help the war effort?
it did complex calculations needed to accurately fire artillery.
it did complex calculations that planned battle strategies.
it decoded the german language.
it decoded the japanese language.

Explanation:

ENIAC (Electronic Numerical Integrator and Computer) was developed during World War II. Its primary initial use was for calculating artillery firing tables. These tables required complex mathematical computations to determine the trajectory of artillery shells accurately. While it had other capabilities later, its immediate contribution to the war effort was in this calculation - related task for artillery. Options B (planning battle strategies) was not its main initial war - related use. Options C and D (decoding languages) were not functions of ENIAC.

Answer:

A. It did complex calculations needed to accurately fire artillery.