full adder


Also found in: Acronyms.

full adder

[¦fu̇l ′ad·ər]
(electronics)
A logic element which operates on two binary digits and a carry digit from a preceding stage, producing as output a sum digit and a new carry digit. Also known as three-input adder.
References in periodicals archive ?
One is responsible for the adder's architecture implemented with the one-bit full adder as a building block.
3 shows the configuration of the proposed all-optical full adder. It consists of fife symmetrical QD-SOA-based MZIs (QD-SOAMZI-1 to QD-SOA MAZI-5) with the same QD-SOA placed in each of its arms.
This shows the potential to further integrate the device into a larger-scale integrated circuit such as 16-bit full adder in a cascaded configuration (see the next section).
Many full adder circuits have been designed so far.
Table 1 presents the logical table of a full adder. In latest nanotechnology, study on the architecture of nanoscale full adder is considerably enlarged particularly in the QCA [22, 23].
have also designed all-optical full adder circuit using five reversible Toffoli gates [9].
For simplicity, the 8 x 8 Add-Shift Multiplier using the GDI based full adder is considered.
(i) Decompose the addition as two adders: one is a full adder for adding the two least significant bits of the input operands with the incoming carry, and another is a 3-bit adder with add-3 correction merged for the remaining bits.
Sarkar, "Transistor Count Optimization of Conventional CMOS Full Adder & Optimization of Power and Delay of New Implementation of 18 Transistor Full Adder by Dual Threshold Node Design with Submicron Channel Length", International Conference on Computers and Devices for Communication, pp.
This requires 2's complement when the phase is between (n: 2[pi]) and is achieved by adding full adder at the output gate to accomplish the full sine wave value.
Test circuit Number of Model Reliability Time (s) Storage faulty gates (bytes) PGM 0.7879 4.46 1962 Full adder 5 BDEC 0.7875 0.61 802 PTM 0.7997 6.56 173872 BN 0.8869 3.33 108654 PGM 0.7397 1.55 1836 2-4 decoder 6 BDEC 0.7405 0.69 1260 PTM 0.7566 41.38 1201826 BN 0.9166 6.18 131642 PGM 0.7621 9.10 7088 C17 6 BDEC 0.7634 0.55 1096 PTM 0.7839 6.27 142102 BN 0.8816 3.13 139456 PGM 0.5933 4.16 3348 NAND based 12 BDEC 0.6326 0.88 2188 full adder PTM 0.6605 11.33 327268 BN 0.7809 4.13 227444 PGM 0.5767 8.27 9460 Majority 28 BDEC 0.6274 1.94 8300 gates PTM Storage complexity increases based full result in "busy" mode adder BN 0.7560 7.55 594548
To count "1" from 4 parallel bits of the output of the preprocessing unit, it employs three full adders, as shown in Figure 6(a).