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2. Carry-lookahead adder - Wikipedia

   en.wikipedia.org/wiki/Carry-lookahead_adder

   Carry-lookahead logic uses the concepts of generating and propagating carries. Although in the context of a carry-lookahead adder, it is most natural to think of generating and propagating in the context of binary addition, the concepts can be used more generally than this.

3. 74181 - Wikipedia

   en.wikipedia.org/wiki/74181

   Multiple 'slices' can be combined for arbitrarily large word sizes. For example, sixteen 74S181s and five 74S182 look ahead carry generators can be combined to perform the same operations on 64-bit operands in 28 nanoseconds (36 MHz). Although overshadowed by the performance of today's multi-gigahertz 64-bit microprocessors, this was quite ...

4. Kogge–Stone adder - Wikipedia

   en.wikipedia.org/wiki/Kogge–Stone_adder

   An example of a 4-bit Kogge–Stone adder is shown in the diagram. Each vertical stage produces a "propagate" and a "generate" bit, as shown. The culminating generate bits (the carries) are produced in the last stage (vertically), and these bits are XOR'd with the initial propagate after the input (the red boxes) to produce the sum bits. E.g., the first (least-significant) sum bit is ...

5. Carry-skip adder - Wikipedia

   en.wikipedia.org/wiki/Carry-skip_adder

   A carry-skip adder [nb 1] (also known as a carry-bypass adder) is an adder implementation that improves on the delay of a ripple-carry adder with little effort compared to other adders. The improvement of the worst-case delay is achieved by using several carry-skip adders to form a block-carry-skip adder.

6. Explainer-Who are the immigrants who could be targeted in ...

   www.aol.com/news/explainer-immigrants-could...

   President-elect Donald Trump plans to launch a mass deportation operation targeting millions of immigrants living in the U.S. illegally and with temporary protections once he takes office on Jan ...

7. List of 4000-series integrated circuits - Wikipedia

   en.wikipedia.org/wiki/List_of_4000-series...

   The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...

8. The 25 best last-minute gifts that will still arrive by Christmas

   www.aol.com/lifestyle/last-minute-christmas...

   Here are 25 great last-minute gifts that you can still shop ahead of Christmas. RENPHO. Renpho Eyeris Eye Massager With Heat. The Renpho Eyeris is an AOL-approved gift. It's an eye massager that ...

9. Black Friday isn't over at Walmart: Here are the 10 best ...

   www.aol.com/lifestyle/black-friday-isnt-over-at...

   The 10th Generation iPad is one of Apple's sharpest, featuring an A14 bionic chip and 64MB of space. It's perfect for connecting to your WiFi and watching TV, reading books, playing games, and ...