Digital currency is money that exists only in electronic form. Unlike physical cash—coins or notes—you can’t hold it in your hand, but you can spend, store, or transfer it using digital devices. It’s not a new idea; banks have used digital records for years. But today’s digital currencies go further, enabling peer-to-peer transactions without needing a bank.

There are two broad types: centralized (like digital bank money or CBDCs—Central Bank Digital Currencies) and decentralized (like Bitcoin or Ethereum). Centralized versions are issued by governments or financial institutions. Decentralized digital currencies rely on blockchain technology and are usually not controlled by any single entity.

People use digital currencies for online shopping, investing, remittances, and even gaming. The appeal lies in their speed, lower transaction fees, and, in some cases, anonymity.

However, digital currencies also raise questions. Are they secure? Can they be regulated? What happens if your digital wallet gets hacked? These are concerns that shape ongoing debates among governments, technologists, and users.

As digital currency adoption grows, understanding how it works—and how it affects you—is crucial. Whether you’re a curious beginner or a tech enthusiast, this course will help you navigate this digital revolution with confidence.