QCM : Evolution of Computer Technology — 9 questions

Questions et réponses du QCM

1. What are vacuum tube computers primarily known for?

Early electronic computers that used vacuum tubes for circuitry
Computers that relied on magnetic core memory
Computers that used transistors instead of vacuum tubes
Modern computers utilizing integrated circuits

Early electronic computers that used vacuum tubes for circuitry

Explication

Vacuum tube computers are known for being the first electronic digital computers that used vacuum tubes for their circuitry, which was a key feature of first-generation computers.

2. What is a key fact about the significance of the stored-program concept in computing history?

It replaced vacuum tubes with transistors, making computers smaller and faster.
It was invented by Alan Turing in the 1930s as part of the theoretical foundation of computing.
It allowed computers to store both data and instructions in memory, enabling programmability.
It was first implemented in the ENIAC computer in 1946.

It allowed computers to store both data and instructions in memory, enabling programmability.

Explication

The stored-program concept is significant because it allowed computers to store both data and instructions in memory, which enabled programmability and flexibility. This foundational idea revolutionized computing and is used in all modern computers.

3. What was the primary purpose of the technological advancements in each computer generation?

To make computers smaller and more portable
To develop new programming languages for computers
To reduce the cost of manufacturing computers
To improve the speed, reliability, and versatility of computers

To improve the speed, reliability, and versatility of computers

Explication

The main purpose of technological advancements in each computer generation was to improve the speed, reliability, and versatility of computers, enabling them to perform more complex tasks efficiently and reliably.

4. When was the first programmable digital computer, ENIAC, completed?

1956
1946
1960
1947

1946

Explication

ENIAC, the first programmable digital computer, was completed in 1946, marking the beginning of the first generation of computers that used vacuum tubes.

5. How do second-generation devices differ from first-generation devices?

Second-generation devices were primarily mechanical, using gears and levers, unlike the electronic vacuum tubes of first-generation devices.
Second-generation devices used transistors instead of vacuum tubes, making computers smaller, faster, and more reliable.
Second-generation devices used integrated circuits, which were larger and less efficient than the magnetic drums of first-generation devices.
Second-generation devices relied on vacuum tubes, which were larger and less reliable than the solid-state transistors used in first-generation devices.

Second-generation devices used transistors instead of vacuum tubes, making computers smaller, faster, and more reliable.

Explication

Second-generation devices differ from first-generation devices mainly because they used transistors instead of vacuum tubes, leading to smaller, faster, and more reliable computers.

6. Who is credited with the invention of the transistor?

Alan Turing
William Shockley
Nikola Tesla
Thomas Edison

William Shockley

Explication

William Shockley is widely credited as one of the inventors of the transistor, having co-developed it at Bell Labs in 1947. The other options, Thomas Edison, Alan Turing, and Nikola Tesla, are notable inventors and scientists but did not invent the transistor.

7. What was a primary effect of transitioning from vacuum tubes to transistors in computer technology?

Computers became larger and more power-consuming
Computers started using mechanical parts for processing
Computers became smaller, faster, and more reliable
Computers began to rely solely on magnetic storage devices

Computers became smaller, faster, and more reliable

Explication

The transition from vacuum tubes to transistors caused computers to become smaller, faster, and more reliable, as transistors are semiconductor devices that are more efficient and less fragile than vacuum tubes.

8. How would a programmer best apply the evolution of hardware technology from vacuum tubes to transistors in practice when developing software?

Avoid using high-level languages to prevent compatibility issues
Use machine language exclusively for maximum efficiency
Rewire hardware components to optimize program execution
Write programs in high-level languages like COBOL or FORTRAN to leverage hardware improvements

Write programs in high-level languages like COBOL or FORTRAN to leverage hardware improvements

Explication

As hardware technology evolved from vacuum tubes to transistors and beyond, it became feasible and advantageous for programmers to use high-level programming languages like COBOL and FORTRAN. These languages abstract away hardware complexities, making programming more accessible, efficient, and less error-prone, especially as hardware capabilities increased.

9. What is a key feature of the impact of technological advances on early computers?

The use of punch cards for input and output operations
The introduction of magnetic tapes for data storage in the 1960s
The replacement of vacuum tubes with transistors, leading to smaller and more reliable machines
The development of high-level programming languages like COBOL and FORTRAN

The replacement of vacuum tubes with transistors, leading to smaller and more reliable machines

Explication

The transition from vacuum tubes to transistors was a major technological advance that made computers smaller, faster, more reliable, and more energy-efficient, marking a key feature of the impact of technological progress.

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First computers — size?

Large, room-sized.

First computers — input method?

Punched cards and paper tape.

Stored-program — benefit?

Flexibility and automation.

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