Early computers were groundbreaking machines that laid the foundation for modern technology. Long before today's sleek laptops and smartphones, computing began with simple tools like the abacus, used for basic arithmetic thousands of years ago. In the 17th century, inventors like Blaise Pascal and Gottfried Leibniz created mechanical calculators that could perform addition, subtraction, and even multiplication. The real leap came in the 19th century when Charles Babbage conceptualized the Analytical Engine—a design that included components similar to today’s CPU and memory. Though it was never built in his lifetime, it marked the birth of programmable computing. In the 20th century, machines like the ENIAC emerged, using vacuum tubes to perform complex calculations at unprecedented speeds. These early computers were massive, power-hungry, and limited in capability, but they revolutionized science, warfare, and industry. Over time, the invention of transistors and microprocessors made computers smaller, faster, and more accessible, leading to the digital age we live in today.
The CPU has evolved from vacuum tubes to modern microprocessors.The 1st generation used vacuum tubes, while the 2nd generation relied on transistors.By the 4th generation, computers became personal and affordable.
A famous equation: E = mc2
Another example: H2O represents water.
The WWW was invented byTim Berners-Lee. As he once said:
"The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect."
Today, we use dial-up broadband and fiber connections. Computers now fit in our pockets as smartphones.
To display text on a webpage, you can use:
<code>
<html>
<body>
<p>
Hello World
</p>
</body>
</code>
</html>
Another example: Press Ctrl + C to copy text.
System response: Text copied to clipboard.
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