Table of contents
1.
Introduction
2.
Third Generation Computers: A Closer Look
2.1.
How It All Started
2.2.
From Big to Small
2.3.
Faster & Better
2.4.
More Reliable
3.
Advantages of Third Generation Computers
3.1.
Smaller Size
3.2.
Faster Work
3.3.
Less Heat
3.4.
Used Less Power
3.5.
More Reliable
3.6.
Better Storage
4.
Disadvantages of Third Generation Computers
4.1.
Cost
4.2.
Maintenance
4.3.
Technology Changes
5.
Frequently Asked Questions
5.1.
Why were third-generation computers better than the ones before?
5.2.
Could everyone buy a third-generation computer?
5.3.
How long did third-generation computers last?
6.
Conclusion
Last Updated: Aug 13, 2025
Easy

3rd Generation of Computer

Author Riya Singh
0 upvote
Career growth poll
Do you think IIT Guwahati certified course can help you in your career?

Introduction

The shift to third-generation computers was like moving from bulky old TVs to sleek flat screens. Back then, this change was revolutionary, making computers smaller, faster, and more reliable. Imagine replacing parts that filled entire rooms with tiny chips no bigger than a postage stamp. That's what third-generation computers did with integrated circuits. 

3rd Generation of Computer

This article will take you through how these computers changed the game, their upsides, and the challenges they faced. 

Third Generation Computers: A Closer Look

Back in the 1960s and 1970s, something big happened in the world of computers. Before this time, computers were huge, taking up entire rooms, and they weren't very fast or good at saving energy. Then came the third generation of computers, and everything started to change. These new computers used something called "integrated circuits," or ICs for short. An IC is a small chip that can do the work of lots of parts from older computers but in a tiny space.

How It All Started

Before third-generation computers, we had the first and second generations, which used vacuum tubes and transistors. These parts were big and got very hot. When integrated circuits came along, they could put many transistors on one small chip. This was a big deal because it made computers much smaller, they didn't get as hot, and they used less power. Plus, they could do things faster and store more information.

From Big to Small

Imagine going from a phone that only makes calls to a smartphone that fits in your pocket and can do almost anything. That's kind of what happened with computers. Third-generation computers became smaller, so they didn't need huge rooms anymore. This made it easier for more businesses and schools to start using computers.

Faster & Better

With everything packed into a small chip, third-generation computers worked faster. They could do more calculations in less time. This made them really useful for lots of different jobs, like science research, running businesses, and even in schools.

More Reliable

Because these new computers didn't get as hot and had fewer parts that could break, they didn't stop working as often. This was great because people could rely on them more to get important work done.

Advantages of Third Generation Computers

Smaller Size

Third-generation computers were much smaller than the ones before. This was a big plus because it meant they could fit into smaller spaces. People didn't need huge rooms for them anymore.

Faster Work

These computers were also faster. They could do more tasks in less time, which was great for businesses and schools. It was like going from walking to riding a bike.

Less Heat

Older computers got really hot, but third-generation ones stayed cooler. This was better for the computers and safer for the people using them.

Used Less Power

They didn't need as much electricity to run, which was good for saving energy and keeping costs down.

More Reliable

With fewer parts that could break, these computers didn't stop working as often. This meant people could depend on them more for their important tasks.

Better Storage

They could store more information. This was like having a bigger backpack for school, so you could carry more books and things you need.

Disadvantages of Third Generation Computers

But, like everything, these computers weren't perfect. They had some downsides too.

Cost

Even though they were better, they were still pretty expensive. Not everyone could afford to have one.

Maintenance

When they did need fixing, it wasn't always easy. Sometimes you needed a special expert to do it, which could be a hassle and cost more money.

Technology Changes

Technology kept improving fast, so these computers could quickly become outdated. It was like how a new phone model comes out, and suddenly the old one doesn't seem as good.

Frequently Asked Questions

Why were third-generation computers better than the ones before?

Third-generation computers used tiny parts called integrated circuits. These made the computers smaller, faster, and not as hot. They also broke less often, which meant people could rely on them more.

Could everyone buy a third-generation computer?

No, not really. Even though they were a big improvement, they were still pretty expensive. Not everyone could afford one, especially right when they came out.

How long did third-generation computers last?

They were great for their time, but technology keeps getting better. So, they started to seem not as good when newer, even better computers came out. It's like how new phones today make last year's models seem old.

Conclusion

Third-generation computers were a big deal. They made computers smaller, faster, and more useful for more people. They had some problems, like being expensive and getting outdated quickly. But, they taught us a lot about making better computers. Today's gadgets, like smartphones and laptops, wouldn't be here without the steps made by third-generation computers. They were an important part of the journey to the amazing tech we have now.

You can refer to our guided paths on the Coding Ninjas. You can check our course to learn more about DSADBMSCompetitive ProgrammingPythonJavaJavaScript, etc. Also, check out some of the Guided Paths on topics such as Data Structure and AlgorithmsCompetitive ProgrammingOperating SystemsComputer Networks, DBMSSystem Design, etc., as well as some Contests, Test Series, and Interview Experiences curated by top Industry Experts.

Live masterclass