Jawaban:
Option 2 ( 1960 )
Why?
→ mechanical calculator is a calculator that uses an automatic system / runs with machines automatically. While in the text, calculators with machines were developed in the 1960s, the mechanical calculators were developed in the 1960s.
______
Green
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Jawaban:
Option 2 ( 1960 )
Why?
→ mechanical calculator is a calculator that uses an automatic system / runs with machines automatically. While in the text, calculators with machines were developed in the 1960s, the mechanical calculators were developed in the 1960s.
______
Green