Zilog Z80 8-Bit Microprocessor
Brief: technical description, diagrams, pin-out and signals, specifications. [University of Washington, Electrical Engineering, Circuits Archive]
http://www.ee.washington.edu/circuit_archive/micro/z80.html

Prime Design Consulting
Electronic Consulting Services, Product development, Prototypes, Electronic Consultant, Embedded Microprocessor Design, Analog & Digital circuits, Firmware, Software
http://www.pdcweb.com

Microprocessor Simulator 8085
Buy Microprocessor Simulator 8085 for Windows at Insoluz.com
http://www.insoluz.com/Micro/Micro.html

Printech Circuit Laboratories
Printech manufacturer of high technology printed circuit boards
http://www.pcll.net/

Lessons in Electric Circuits
Online book by Tony R. Kuphaldt on dc and ac electric circuits, semiconductor devices, analog and digital circuits.
http://www.allaboutcircuits.com/

Electronic Circuits
An archive of electronic circuits divided into categories such as power supplies, auto, computer circuits, sound/radio.
http://www.aaroncake.net/circuits/index.asp

Rans & Anks Software
µP-Sim - The 8085 Microprocessor Simulator (not just any other 8085 simulator) is a total software solution to replace the microprocessor kit or the in-Circuit Emulator from training and design labs. The Simulator executes the instructions from the user entered program, instruction by instruction showing all the register and flag status at the end of execution of each instruction. The input process is fast and efficient, leading to better productivity. The Mnemonic Pad allows the user to enter the code. This makes is impossible to enter a wrong Mnemonic. The Tool tips tell you the syntax along with the operation performed by a particular Mnemonic.
http://www.geocities.com/ransandanks/

Flex Interconnect Technologies
Flex Interconnect designs, manufactures and assembles flex circuits and rigid-flex circuits
http://www.fit4flex.com

Datex Instruments, Inc.
Datexusa has been a hi-tech electronics manufacturing facility with state-of-art equipment, thumbwheel switches, C&K Switches, pushwheel switches, cherry switches, leverwheel switches, miniature thumbwheel switches, subminiature precision snap-acting, metal cased precision snap-acting
http://www.datexusa.com

Sam Electronic Circuits
Electronic Circuits for the Hobbyist designed by Sam. with full description and diagrams in Greek and English. ÇëåêôñïíéêÜ êõêëþìáôá ãéá ÷ïìðßóôåò. Ðëçñïöïñßåò-äéáãñÜììáôá.
http://users.otenet.gr/~athsam