Logic circuits
Which is a characteristic of Gray code?
- AEach decimal digit is represented by 4 bits
- BIt detects errors with a parity bit
- COnly one bit changes between adjacent values
Show answer and explanation
Answer: C. Only one bit changes between adjacent values
In Gray code, exactly one bit changes between adjacent values. Because multiple bits never change at once, errors are less likely in rotary encoder position sensing and when passing counter values between circuits with different clocks. Representing each decimal digit with 4 bits is BCD.