What does barrel shifter mean?
Definitions for barrel shifter
bar·rel shifter
This dictionary definitions page includes all the possible meanings, example usage and translations of the word barrel shifter.
Wikipedia
Barrel shifter
A barrel shifter is a digital circuit that can shift a data word by a specified number of bits without the use of any sequential logic, only pure combinational logic, i.e. it inherently provides a binary operation. It can however in theory also be used to implement unary operations, such as logical shift left, in cases where limited by a fixed amount (e.g. for address generation unit). One way to implement a barrel shifter is as a sequence of multiplexers where the output of one multiplexer is connected to the input of the next multiplexer in a way that depends on the shift distance. A barrel shifter is often used to shift and rotate n-bits in modern microprocessors, typically within a single clock cycle. For example, take a four-bit barrel shifter, with inputs A, B, C and D. The shifter can cycle the order of the bits ABCD as DABC, CDAB, or BCDA; in this case, no bits are lost. That is, it can shift all of the outputs up to three positions to the right (and thus make any cyclic combination of A, B, C and D). The barrel shifter has a variety of applications, including being a useful component in microprocessors (alongside the ALU).
Wikidata
Barrel shifter
A barrel shifter is a digital circuit that can shift a data word by a specified number of bits in one clock cycle. It can be implemented as a sequence of multiplexers, and in such an implementation the output of one mux is connected to the input of the next mux in a way that depends on the shift distance. For example, take a four-bit barrel shifter, with inputs A, B, C and D. The shifter can cycle the order of the bits ABCD as DABC, CDAB, or BCDA; in this case, no bits are lost. That is, it can shift all of the outputs up to three positions to the right. The barrel shifter has a variety of applications, including being a useful component in microprocessors.
Numerology
Chaldean Numerology
The numerical value of barrel shifter in Chaldean Numerology is: 7
Pythagorean Numerology
The numerical value of barrel shifter in Pythagorean Numerology is: 6
Translations for barrel shifter
From our Multilingual Translation Dictionary
- برميل شيفترArabic
- cambio barileItalian
- deslocador de barrilPortuguese
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"barrel shifter." Definitions.net. STANDS4 LLC, 2024. Web. 13 May 2024. <https://www.definitions.net/definition/barrel+shifter>.
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