Còn gọi là hàm không tương đương, Hàm cộng modul-2, Hay là phép Cộng có loại trừ.
Phương trình : Phương trình hàm XOR 2 biến được định nghĩa như sau :
F(AB) = AB + AB = A Å B
F = 1 khi tất cả các biến đầu vào có giá trị khác nhau.
F = 0 khi các biến vào có giá trị giống nhau.
A B A Å B 0 0 0 0 1 1 1 0 1 1 1 0
Throughout history, science has changed lives and dramatically altered the way in which the universe is perceived. Focusing on the 100 most significant scientific events of all time--from Archimedes' discovery of the two fundamental principles underlying physics and engineering (levers and buoyancy) in 260 B.C.E. to human anatomy, Jupiter's moons, electrons, black holes, the human genome, and more--storyteller Kendall Haven has created a ready reference for those seeking information on science discoveries. Brimming with fascinating and fun facts about 100 scientific breakthroughs, this collection presents the real stories behind the history of science, at the same time offering a panoramic overview of the history of science and an introduction to some of the most important scientists in history. Grades 6 and up.
In just one hour a day, you’ll have all the skills you need to begin programming in C++. With this complete tutorial, you’ll quickly master the basics and then move on to more advanced features and concepts:
