Application of Gray Code

For Gray Code, only one bit in the code group changes from one step to another. This is known as a “minimum-change code.” Because there are no explicit weights applied to the bit places in this code, it is an unweighted code. Arithmetic operations are not suitable for use with the characteristic of Gray Code. However, it can be used in input/output devices and some analogue to digital converters (ADCs). What distinguishes the Gray Code from the rest? Compared to other codes, the Gray Code is easier to read because just one bit of all codes changes and there is no need to synchronise the reading timing (the binary code and the BCD code).

Characteristics of the Gray Code

For example, if we switch from one decimal number to another in Gray Code, only one bit of the Gray Code changes. In addition to decreasing the quantity of switching required, this feature also improves the overall dependability of the switching systems.

Compared to binary, the advantage of Gray Code is that just one bit changes for each step. This will come in handy in circuits that are sensitive to glitches and other errors. For example, when you use Gray Code to trim the output impedance of IO blocks, there will not be a significant jump in codes that would cause reflection for a brief period of time.

The reflected binary code was originally created to prevent spurious output from electromechanical switches from being generated. Gray Codes are now widely used in digital communications, such as digital terrestrial television and some cable television systems, to aid in error correction and improve the signal’s overall quality.

The Benefits of Gray Code

Gray Code has several advantages. For example, if we switch from one decimal number to another in Gray Code, only one bit of the Gray Code changes. In addition to decreasing the quantity of switching required, this feature also improves the overall dependability of the switching systems. Compared to binary, the advantage of Gray Code is that just one bit changes for each step.

In contrast to weighted codes, Gray Code is a non-weighted code that is a special instance of a unit-distance code. Consider the following scenario: a 3-bit binary code is provided to identify the position of the rating disc with the help of brushes in an application. b) When brushes are in the black position, they produce the number 1.

When compared to binary coding, the Gray Code is an unusual and one-of-a-kind coding. Because of the way Gray Code works, as a number progresses from one to its successive next number, there will be no change in the binary number other than the one digit that is being changed.

Application of Gray Code

• Pretend you’re in the following situation: With the use of brushes in an application, it is possible to identify the position of the rating disc using a 3-bit binary code that is provided.· A number 1 is produced by brushes when they are in the black position (Figure b). In their white position, they emit the number 0 when they are activated
• Consider the following scenario: the brushes are currently in sector 111 and are on the verge of entering sector 000. What is going to happen?
• The position 011 can be used instead of 000 or 111 if one brush moves somewhat ahead of another. For example, the third brush moves slightly ahead of the second brush. As a result, the disc position is 1800 milliseconds off from the true position
• As a result, because it is physically impossible to have all of the brushes perfectly aligned, there will always be a small amount of error at the boundary of each sector
• The use of Gray Code to represent disc position can help to reduce the amount of error produced by poor brush alignment on the disc. f) Since the Gray Code ensures that only one bit will change at a time when the decimal number is increased, the likelihood of data corruption is reduced
• When dealing with the standard series of binary numbers created by the hardware, Gray Codes are extremely significant since they can aid in the prevention of errors or misunderstandings that may occur during the transition from one number to the other. This results in a straightforward solution to the problem because only one bit changes its value during any transition between two integers in the code, which makes it a straightforward solution
• Consequently, a single bit position can cause an error in a three-bit code, and an error can occur as a result. Two adjacent sectors have always had identical other two-bit places. Hence there is no possibility of an error arising between the two