Match List I (System Name) with List II (Year/Time period).

List I

i.The Mark I computer

ii.IBM-701

iii.IBM-650

iv.The Universal Automatic Computer One (UNIVAC-I)

List II

a.1951

b.1953

c.1937 to 1944

d.1952

Ai-c, ii-d, iii-b, iv-a ✓ Correct

Bi-b, ii-c, iii-a, iv-d

Ci-a, ii-b, iii-d, iv-c

Di-d, ii-a, iii-b, iv-c

Correct answer: (A) i-c, ii-d, iii-b, iv-a

Explanation

The Mark I computer pairs with 1937 to 1944, the span over which Harvard's electromechanical machine was developed and completed.

IBM 701 pairs with 1952, the year IBM introduced this early scientific stored program computer.

IBM 650 pairs with 1953, when this widely sold magnetic drum machine was announced.

UNIVAC I pairs with 1951, the year the first commercial computer in the United States was delivered.

The correct set of pairings is i with c, ii with d, iii with b and iv with a.

These machines mark the transition from electromechanical to electronic commercial computing.

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