Classification of Computing Devices (Generations): JAMB Computer Studies Questions, Answers & Notes

What Classification of Computing Devices (Generations) covers in the JAMB Computer Studies syllabus

Computers are classified into generations based on the technology used to build them: the first generation used vacuum tubes (very large, much heat), the second used transistors, the third used integrated circuits (ICs), the fourth used microprocessors (VLSI), and the fifth is associated with artificial intelligence. Across the generations, computers became smaller, faster, cheaper and more reliable. Computers are also classified by size and power: the supercomputer (largest and most powerful), the mainframe (large, serving many users in big organisations), the minicomputer and the microcomputer (such as a personal computer). By the type of data they handle, an analogue computer processes continuous physical quantities while a digital computer processes discrete digits (0s and 1s). The main point: computers are classified by generation (vacuum tubes → transistors → ICs → microprocessors → AI) and by size (super, mainframe, mini, micro).

For Classification of Computing Devices (Generations), JAMB expects you to be able to:

• Recall the five generations and their technology (vacuum tubes, transistors, ICs, microprocessors, AI)
• Explain the trends across generations (smaller, faster, cheaper, more reliable)
• Classify computers by size/type (supercomputer, mainframe, mini, micro) and analogue vs digital

Key facts & revision notes: Classification of Computing Devices (Generations)

These are the recurring points our Classification of Computing Devices (Generations) questions test — revise them until each feels automatic, then practise the questions above to lock them in.

• Computers are grouped into generations based on the technology used to build them.
• The first generation of computers used vacuum tubes.
• The second generation of computers used transistors.
• The third generation used integrated circuits (ICs).
• The fourth generation used microprocessors (very large scale integration, VLSI).
• The fifth generation is associated with artificial intelligence and very advanced processing.
• Over the generations, computers became smaller in size.
• Over the generations, computers became faster in processing speed.
• First-generation computers were very large and generated a lot of heat (from vacuum tubes).
• A supercomputer is the largest and most powerful class of computer by size/power.
• A personal computer (PC) is an example of a microcomputer.
• A mainframe is a large computer used by big organisations to serve many users.
• An analogue computer processes continuous physical quantities (like temperature).
• A digital computer processes data as discrete digits (0s and 1s).
• Computers are grouped into generations by technology.
• The first generation used vacuum tubes.
• The fourth generation used microprocessors.
• A personal computer is a microcomputer.
• The fifth generation is linked to artificial intelligence.
• The main point is that computers are classified by generation (vacuum tubes → transistors → ICs → microprocessors → AI) and by size (super, mainframe, mini, micro).

Worked examples

Three Classification of Computing Devices (Generations) questions with the answer and a short explanation, so you can see how the topic is set before you practise the full set.

How Classification of Computing Devices (Generations) is tested in JAMB Computer Studies

Our Classification of Computing Devices (Generations) bank holds 20 questions (1 easy, 10 medium, 9 hard). JAMB Computer Studies typically returns to Classification of Computing Devices (Generations) year after year, so steady practice on this topic is high-value revision. Questions are multiple-choice with four options, and at UTME pace you get roughly 40 seconds each — which is why timed practice matters.

How to answer Classification of Computing Devices (Generations) questions

Work the stem first and predict the answer before you look at the options; then eliminate the ones that contradict the key facts above. Watch for “which is not…”, “all of the above” and “except” style stems, which are where rushed candidates lose easy marks on Classification of Computing Devices (Generations). If a calculation or a precise definition is involved, work it from first principles rather than guessing from a half-remembered rule. When two options look right, re-read the stem for the qualifier that separates them — JAMB rarely repeats an option by accident. If you are still unsure, eliminate the two weakest choices to lift your odds, flag the question, and move on; never burn a full minute on one Computer Studies item when the exam gives you about forty seconds each. Then come back to flagged questions with whatever time remains. The single most reliable way to get faster at Classification of Computing Devices (Generations) is repeated timed practice, so use the button above until the recurring patterns feel automatic.

Common mistakes to avoid in Classification of Computing Devices (Generations)

The errors that cost marks on Classification of Computing Devices (Generations) are usually careless rather than conceptual: misreading a negative stem, confusing two similar terms, or rushing a definition you actually know. Candidates also over-rely on “expo” and last-minute cramming instead of understanding the topic — which fails the moment JAMB rephrases a familiar idea. Treat every option as a claim to be checked against the facts above, keep your working tidy for any calculation, and don’t change a considered answer on a hunch. Above all, revise Classification of Computing Devices (Generations) actively by answering questions, not just by re-reading notes — recall under time is what the exam rewards.

Frequently asked questions

Is Classification of Computing Devices (Generations) part of the JAMB Computer Studies syllabus?

Yes. Classification of Computing Devices (Generations) is a recognised topic in the JAMB Computer Studies syllabus, covering recall the five generations and their technology (vacuum tubes, transistors, ICs, microprocessors, AI). You should be able to recall its key facts and apply them to multiple-choice questions.

How many Classification of Computing Devices (Generations) questions can I practise on Belmadeng?

There are 20 original, JAMB-standard Classification of Computing Devices (Generations) questions in our free bank, each with the correct answer and a worked explanation. You can practise them untimed or as a timed test.

What are the most important points to know about Classification of Computing Devices (Generations)?

Computers are classified into generations based on the technology used to build them: the first generation used vacuum tubes (very large, much heat), the second used transistors, the third used integrated circuits (ICs), the fourth used microprocessors (VLSI), and the fifth is associated with artifi…

How do I answer Classification of Computing Devices (Generations) questions quickly in JAMB?

Read the stem carefully, eliminate clearly wrong options, and match the remaining choices to the key facts for Classification of Computing Devices (Generations). Practising timed Classification of Computing Devices (Generations) questions builds the speed you need for UTME's pace of about 40 seconds per question.

Are these JAMB Computer Studies Classification of Computing Devices (Generations) questions past questions or original?

They are original questions written to JAMB (UTME) standard and mapped to the official syllabus — not reproduced past papers. This keeps them legal to use freely while closely mirroring how the real exam tests the topic.

Where can I practise Classification of Computing Devices (Generations) questions free without signing up?

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About these questions: original, JAMB-standard items written from the official UTME Computer Studies syllabus (last reviewed 2026-09-18). Belmadeng is an independent study platform and is not affiliated with JAMB. Spotted an error? Use the report link.