Question Discussion & Solution

The correct answer is The correct answer is D: Binary. Computers fundamentally use the binary number system (base-2) to store data and perform calculations because their underlying electronic circuits operate using two distinct states: on/off, high/low voltage, or charge/no charge. These two states are perfectly represented by the two digits of the binary system: 0 and 1..

🔑 Key Points

• Computers are electronic devices that process information using electrical signals.
• These electrical signals can easily represent two distinct states: ON (typically represented by 1) and OFF (typically represented by 0).
• The binary number system is a base-2 system that uses only two digits: 0 and 1.
• This direct correspondence between the physical states of electronic components and the binary digits makes binary the most efficient and reliable system for computers to process and store all forms of data, including numbers, text, images, and instructions.

📄 Additional Information

• While computers internally operate using binary, other number systems like Decimal (base-10) are used by humans for everyday arithmetic. Hexadecimal (base-16) and Octal (base-8) are often used in computer science and programming as a more compact and human-readable way to represent long strings of binary digits (bits), as they can easily be converted to and from binary. For example, one hexadecimal digit represents four binary digits, and one octal digit represents three binary digits. However, the internal processing by the CPU and memory storage still occurs in binary.