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The most significant digit is an exception to this: for an n-bit Gray code, the most significant digit follows the pattern 2 n-1 on, 2 n-1 off, which is the same (cyclic) sequence of values as for the second-most significant digit, but shifted forwards 2 n-2 places. The four-bit version of this is shown below:
A 2-bit Johnson code and a 2-bit Gray code are identical, while for 3 or more bits Gray and Johnson codes are different. In the 5-bit case, the code is the same as the Libaw–Craig code [ de ] for decimal digits.
Up/down counter – counts up and down, as directed by a control input, or by the use of separate "up" and "down" clocks. Ring counter – formed by a "circular" shift register. Johnson counter – a twisted ring counter. Gray-code counter – outputs a sequence of Gray codes. Shift register generator counter – based on a shift register with ...
Gray code to decimal decoder 16 SN7444A: ... 2 dual 4-bit binary counter, asynchronous clear 14 SN74LS393: 74x395 1 4-bit cascadable shift register three-state 16
Rotary encoder for angle-measuring devices marked in 3-bit binary-reflected Gray code (BRGC). The inner ring corresponds to Contact 1 in the table. Black sectors are "on". Zero degrees is on the right-hand side, with angle increasing counter-clockwise. To avoid the above problem, Gray coding is used. This is a system of binary counting in which ...
The original can be viewed here: Branch prediction 2bit saturating counter.gif: . Modifications made by Dia . I, the copyright holder of this work, hereby publish it under the following licenses:
The Aiken code differs from the standard 8421 BCD code in that the Aiken code does not weight the fourth digit as 8 as with the standard BCD code but with 2. Aiken code (symmetry property) Aiken code in hexadecimal coding. The following weighting is obtained for the Aiken code: 2-4-2-1. One might think that double codes are possible for a ...
Rounding up and down to a multiple of a known power of 2, the next power of 2 and for detecting whether an operation crossed a power-of-2 boundary; Checking bounds; Counting total, leading and trailing zeros; Searching for bit strings; Permutations of bits and bytes in a word; Software algorithms for multiplication; Integer division