What is the binary system?

What is the binary system?

• A. A number system with two digits, 0 and 1
• B. An 8-bit coding scheme
• C. A number system with 10 digits, 0-9
• D. A 16-bit coding scheme

Answer: (A)

Binary is a base-2 numeral system that uses two symbols, 0 and 1. Each position represents a power of two, so numbers are built by adding powers of two. For example, 1011 equals 11 in decimal (1×8 + 0×4 + 1×2 + 1×1). This is different from an 8‑ or 16‑bit coding scheme, which describes how many bits are used to represent data rather than which digits are used. It’s also different from the decimal system, which uses ten digits (0–9).

Binary is a base-2 numeral system that uses two symbols, 0 and 1. Each position represents a power of two, so numbers are built by adding powers of two. For example, 1011 equals 11 in decimal (1×8 + 0×4 + 1×2 + 1×1). This is different from an 8‑ or 16‑bit coding scheme, which describes how many bits are used to represent data rather than which digits are used. It’s also different from the decimal system, which uses ten digits (0–9).