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logic gates

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logic gates
Boolean logic

Student
Ali Alsaad: 1007194
Date: 20/2/2014

Table of Contents
1-History and introduction
2-Types of Logic gates
3-Uses of logic gates
4-Electronic circuits
5-Conclusion

Introduction

The term Boolean logic (Also known as Boolean algebra) honors George Boole. a self-educated English mathematician. He introduced the algebraic system initially in a small pamphlet, The Mathematical Analysis of Logic, published in 1847 in response to an ongoing public controversy between Augustus De Morgan and William Hamilton, and later as a more substantial book, The Laws of Thought, published in 1854. Boole 's formulation differs from that described above in some important respects. For example, conjunction and disjunction in Boole was not a dual pair of operations. Boolean algebra emerged in the 1860s, in papers written by William Jevons and Charles Sanders Peirce. The first systematic presentation of Boolean algebra and distributive lattices is owed to the 1890 Vorlesungen of Ernst Schröder. The first extensive treatment of Boolean algebra in English is A. N. Whitehead 's 1898 Universal Algebra. Boolean algebra as an axiomatic algebraic structure in the modern axiomatic sense begins with a 1904 paper by Edward V. Huntington. Boolean algebra came of age as serious mathematics with the work of Marshall Stone in the 1930s, and with Garrett Birkhoff 's 1940 Lattice Theory. In the 1960s, Paul Cohen, Dana Scott, and others found deep new results in mathematical logic and axiomatic set theory using offshoots of Boolean algebra, namely forcing and Boolean-valued models.
Whereas in elementary algebra expressions denote mainly numbers, in Boolean algebra they denote the truth values false and true. These values are represented with the bits (or binary digits) being 0 and 1. They do not behave like the integers 0 and 1, for which 1 + 1 = 2, but may be identified with the elements of the two-element field, for which 1 + 1 = 0 with + serving as the



References: Bibliography http://electronics.howstuffworks.com/digital-electronics1.htm. (n.d.). http://en.wikipedia.org/wiki/Electronic_circuit. (n.d.). http://whatis.techtarget.com/definition/logic-gate-AND-OR-XOR-NOT-NAND-NOR-and-XNOR. (n.d.). http://www.electrical4u.com/some-common-applications-of-logic-gates/. (n.d.).

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