1. The problem is to convert the fraction $\frac{1}{2}$ into a decimal number. 2. The formula to convert a fraction to a decimal is to divide the numerator by the denominator. 3. Here, the numerator is 1 and the denominator is 2. 4. Perform the division: $1 \div 2 = 0.5$. 5. Therefore, the decimal equivalent of $\frac{1}{2}$ is $0.5$.