Which of the following is the earliest known calculating device?Select one:a.abacusb.Eniacc.Arpanetd.8086 processor

The first program ever written was written for which device?Select one:a.Analytical engineb.ENIACc.Altaird.Von Neumann Architecture

Which of the following was the first mechanical computer?a. ENIACb. UNIVACc. Analytical Engined. Z3

Which was the first commercially available microprocessor-based computer?*Altair 8800Commodore PETApple IIIBM PCWhat was the major innovation of the stored-program computer?*The ability to use a single machine to run different programsThe ability to perform complex calculations quicklyThe ability to process data using vacuum tubesThe ability to store data on magnetic tape

Which of the following was the first successful personal computer?a. IBM PCb. Apple IIc. Commodore 64d. Altair 8800

Select the correct answer.ENIAC was the first instance of what? A. maglev trains B. GPS devices C. robotics D. electronic computers