What is digital currency and how does it differ from traditional currency?

Digital currency is a form of currency that is available only in digital or electronic form, not in physical form like coins or banknotes. Unlike traditional currency, digital currency is typically decentralized and uses cryptography for security, making it a key topic in Cambridge IGCSE Computer Science under 'The internet and its uses'.

How does digital currency work in online transactions?

Digital currency works in online transactions by using blockchain technology, which records all transactions in a secure and transparent manner. This technology ensures that digital currencies can be transferred directly between users without the need for intermediaries like banks, making transactions faster and often cheaper.

What are the advantages of using digital currency?

The advantages of using digital currency include increased security, lower transaction fees, and faster transaction times. Additionally, digital currencies offer greater accessibility, as they can be used by anyone with internet access, which aligns with the Cambridge IGCSE Computer Science focus on 'The internet and its uses'.

What are some common types of digital currencies?

Some common types of digital currencies include Bitcoin, Ethereum, and Litecoin. These currencies are decentralized and use blockchain technology to ensure secure transactions. Understanding these types is crucial for students studying digital currency under the Cambridge IGCSE curriculum.

What are the potential risks associated with digital currency?

Potential risks associated with digital currency include market volatility, security threats such as hacking, and regulatory uncertainties. These risks highlight the importance of understanding digital currency in the context of 'The internet and its uses' in Cambridge IGCSE Computer Science.

The internet and its usesCambridge IGCSE Computer Science (0478)

Digital Currency

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Study Notes & Exam Tips

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Study Notes

Digital currency is a form of money that exists only in electronic form, offering benefits like decentralization and limited supply to prevent inflation. Transactions are made using digital wallets and are recorded on a blockchain, a secure and permanent digital ledger.

Digital Currency — a currency that exists only electronically. Example: Bitcoin is a digital currency with a capped supply of 21 million.
Digital Wallet — an application that stores digital currencies and allows transactions. Example: A mobile app that holds your Bitcoin and other cryptocurrencies.
Blockchain — a digital ledger that records all transactions permanently and securely. Example: The Bitcoin blockchain records every Bitcoin transaction ever made.

Exam Tips

Key Definitions to Remember

Digital Currency
Digital Wallet
Blockchain

Common Confusions

Confusing digital currency with physical money
Misunderstanding the role of blockchain in transaction security

Typical Exam Questions

What is a digital currency? A currency that exists only electronically.
How does a digital wallet function? It stores digital currencies and allows transactions.
What is the purpose of the blockchain? To record transactions permanently and securely.

What Examiners Usually Test

Understanding of how digital currencies differ from traditional money
The process of making transactions using digital wallets
The role and importance of blockchain technology in digital currencies

Practice questions

Exam-style questions with step-by-step worked solutions. Try one before checking the method.

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