Question 1 of 5
What was the name of the first computer designed by Charles Babbage?
A
Analytical Engine
B
Difference Engine
C
Colossus
D
ENIAC
Why: Charles Babbage designed the **Analytical Engine** in the 1830s, which was the first general-purpose mechanical computer concept with features like CPU, memory, and programmable control flow using punched cards. This distinguishes it from his earlier Difference Engine, which was for polynomial calculations only. Option A matches the correct answer.[6]
Question 2 of 5
Which was the first electronics digital programmable computing device?
A
Analytical Engine
B
Difference Engine
C
Colossus
D
ENIAC
Why: **Colossus** (1943-1944) was the world's first programmable electronic digital computer, developed by Tommy Flowers for code-breaking at Bletchley Park during WWII. It used 1500 vacuum tubes and was programmable via switches and plugs. Unlike mechanical devices like Babbage's engines or later general-purpose computers like ENIAC, Colossus was the first electronic programmable one. Option C is correct.[1][6]
Question 3 of 5
What technology was used in the first generation of computers?
A
Transistors
B
Integrated Circuits
C
Vacuum Tubes
D
Microprocessors
Why: The **first generation** of computers (1940s-1950s) used **vacuum tubes** for circuitry and switching. Examples include ENIAC and UNIVAC. Vacuum tubes were large, generated excessive heat, consumed high power, and were unreliable, leading to frequent failures. This technology marked the transition from mechanical to electronic computing. Option C is correct.[4][5]
Question 4 of 5
Which generation of computers introduced integrated circuits?
A
First
B
Second
C
Third
D
Fourth
Why: **Third generation** computers (1964-1971) introduced **integrated circuits (ICs)**, where multiple transistors were etched onto a single silicon chip. This reduced size, cost, increased speed and reliability compared to second generation transistors. Examples: IBM System/360, PDP-8. ICs enabled minicomputers. Note: Fourth generation used microprocessors (ICs with CPU on chip). Option C is correct.[3][5]
Question 5 of 5
UNIVAC stands for __________.
A
Universal Automatic Calculator
B
Universal Native Input Automatic Computer
C
Universal Native Input Automatic Calculator
D
Universal Automatic Computer
Why: **UNIVAC** stands for **Universal Automatic Computer**. It was the first commercial computer in the US, delivered in 1951 to US Census Bureau by Eckert and Mauchly. Used vacuum tubes (first generation), weighed 29,000 lbs, could perform 1,905 operations/sec. Significant for business/data processing applications. Option D is correct.[1][6]
