carry look ahead adder
2016-08-23
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This is carry look ahead adder which is very useful in order to add 4 bit thing . A carry-lookahead adder (CLA) is a type of adder used in digital logic.
A carry-lookahead adder improves speed by reducing the amount of time
required to determine carry bits. It can be contrasted with the simpler,
but usually slower, ripple carry adder for which the carry bit is calculated alongside the sum bit, and each
bit must wait until the previous carry has been calculated to begin
calculating its own result and carry bits (see adder for detail on ripple carry adders). The carry-looka
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