BASIC DIGITAL ELECTRONICS

Digital electronics is based on electronic switches. A circuit is either on or off represented by the presence of a voltage or not or in some cases two different voltages. A string of on or off conditions are made to represent numbers. These are usually binary numbers but could be based on a variety of mathematical bases. For example, "Hexadecimal" or a base of 16. But the most common is binary. Any number can be represented in a binary based system with a series of ones' and zero's (voltage on/off conditions). Here is a short table of some binary numbers and their decimal equivalents. The binary numbers place values from right to left as shown in the table are; one, two, four, and eight. So, binary 1111 is the same as adding 1+2+4+8 from right to left and that equals 15. See the samples below then study the chart.
1 1 1 1 = 15 binary 1 0 0 1 = 9 binary 1 0 1 1 = 11 binary
8+4+2+1 = 15 decimal 8+0+0+1 = 9 decimal 8+0+2+1 = 11 decimal
DECIMAL=
BINARY
DECIMAL =
BINARY
0
0000
8
1000
1
0001
9
1001
2
0010
10
1010
3
0011
11
1011
4
0100
12
1100
5
0101
13
1101
6
0110
14
1110
7
0111
15
1111
For an online course on digital electronics and how binary mathematics is used in LOGIC blocks visit this web site: http://www.gamezero.com/team-0/articles/math_magic/micro/comb.html
Digital Projects: http://www.eleinmec.com/category.asp?3
These basic concepts are the building blocks for more sophisticated configurations of digital electronic integrated circuits. Today digital integrated circuits combine hundreds and thousands of switches per IC package. It is not necessary to know exactly what the internal circuitry is but you must know the fundamentals to understand how to use the IC's together to build digital equipment. Our computer industry today depends upon many people knowing and using these same basic fundamentals.
Digital Electronics Online Problem - http://science-ebooks.com/electronics/digital_electronics.htm
Digital Electronics & Superconductors http://www.ece.rochester.edu/~sde/cool/coollinks.html
Howstuffworks "How Electronic Gates Work"
Digital Electronics Corporation
Digital Electronics II
Digital Logic
TTL Logic
Digital Logic and Computer Systems College Course http://www.physics.mcmaster.ca/phy4d6/ McMaster University, Hamilton, Ontario, Canada.
Digital electronics Book recommendation: Digital Systems, by by Ronald J. Tocci (Author), Neal S. Widmer (Author)




EXCELLENT!
Reviewer: A readerI use this book for a digital course im taking. Its GREAT at conveying information in a manner that you can understand. It starts of SIMPLE (things like number systems), and takes you to the basics of circuits (AND, OR, NOR, NAND, NOR, gates), and then takes you into some very detailed things. By the time your done with this you will be able to design your OWN circuits and impress your friends :-)