Question : Which of the following is not a weighted code?
Option 1: Excess 3-Code
Option 2: Binary Number System
Option 3: Decimal Number System
Option 4: BCD Number System
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Correct Answer: Excess 3-Code
Solution : The correct answer is Excess 3-Code.
The excess-3 code is not weighted. A weighted code is one in which each digit has a defined weight and the code's value is the sum of the weights of the digits. The excess-3 code is a non-weighted code, which means that the digits do not have defined weights. Excess-3 code was used on some earlier computers, in addition to cash registers and transportable digital calculators.
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