XORn.
/ˈɛksɔː/, U.S. /ˈɛksɔr/ Computing and Electronics.
A Boolean function of two or more variables that has the value unity (or true) if and only if one of the variables has this value. Cf. exclusive or at OR n.2In quot. 1961: an XOR gate.
ΘΚΠ
society > computing and information technology > [noun] > logic > operation > particular operations
and1946
OR1947
negation1949
inversion1955
NOR1957
NAND1958
NOT AND1960
XOR1961
not1969
1961 U.S. Patent 2,973,508 6 The XOR is set up at a setup time during which the i core is impulsed according to the memory word bit and the p core is simultaneously impulsed according to the test word bit of equal order.
1964 Control 8 131/2 This latter operation is the inclusive or; the symbol for the chosen exclusive or (shortened to xor) is v.
1984 P. Simmons Further Pract. Microelectronics iv. 107 The truth table for the exclusive-OR (XOR) is shown in Figure 4.6.
1993 E. S. Raymond New Hacker's Dict. (ed. 2) 458 xor , exclusive or. ‘A xor B’ means ‘A or B, but not both’. ‘I want to get cherry pie xor a banana split.’ This derives from the technical use of the term as a function on truth-values that is true if exactly one of its two arguments is true.
2001 Wired Sept. 154/2 A chain of atoms can be rigged up with the conditional logic—such as AND, OR, XOR—to make a computer.
Compounds
C1. attributive, esp. designating devices for realizing the XOR function.
ΚΠ
1961 U.S. Patent 2,973,508 6 A second embodiment..of the invention employs a non-destructive readout exclusive OR (XOR) circuit for each bit of the words in the core memory.
1974 Nucl. Instruments & Methods 117 319/2 The second kind of signal..is derived from a comparison of BCD levels with the BCD scaler outputs using XOR circuitry.
1986 G. Sassoon Radio Hacker's Code Bk. vi. 88 By this we mean that there was a simple mathematical relationship between the twin-loop input and the key sequence output—the XOR function.
1993 Byte May 130/1 One key byte is used to encrypt each byte of the file, often using the XOR operation.
2006 T. Patrick & J. C. Craig Visual Basic 2005 Cookbk. vi. 182 The Xor operator combines the two integers on a bit-by-bit basis, resulting in a 1 bit whenever the original bits are different and a 0 when they are the same.
C2.
XOR gate n. a circuit which produces an output when a signal is received through one input connection only.
ΘΚΠ
society > computing and information technology > [noun] > logic > operation > logic element > circuit containing
OR gate1953
parametron1956
latch1959
XOR gate1969
1969 Digital Computer Princ. (Burroughs Corporation) (ed. 2) x. 308 A 1 contained in any bit position of both the A and B registers inhibits the output of the XOR gate.
1990 Computers & Structures 36 1171 Most error detection mechanisms..are implemented using hardware facilities such as XOR gates and SHIFT registers.
2002 N. Dale & J. Lewis Computer Sci. Illuminated iv. 93 Note the difference between the XOR gate and the OR gate... When both input signals are 1, the OR gate produces a 1 and the XOR produces a 0.
This is a new entry (OED Third Edition, March 2012; most recently modified version published online December 2021).
<
n.1961