Mainframe computer ICL 1900 computer system

Mainframe computer SCAN DATA - DIGITAL PDP 11  connected to
Scan - Data Corporation 2250/1 OCR - Optical Character Recognition System

Personal Computer ZX 81

Personal Computer AMSTRAD

Personal Computer APPLE and  IRIS 8

Complete design  SWITCH MODE POWER SUPPLY for IRIS 8 PERSONAL COMPUTER without knowing Cuk Slobodan   

                          Dr.SLOBODAN CUK from TESLAco help me later with books about SWITCH MODE POWER SUPPLY

                              HERE IS NASA PDF FILE ABOUT CUK DC to DC SWITCHING CONVERTER

The Cuk DC to DC Switching Converter was developed by Caltech Professors, Slobodan Cuk and R. D. Middlebrook. The converter changes unsuitable dc voltage into one or more voltages suitable for powering electronic equipment; it can also be used in converting dc current to ac and vice versa. It was named one of the 100 most significant technical advances of 1979. The Cuk converter is more efficient than previous conversion devices, simpler, smaller, lighter, cheaper and highly reliable. The first application of the technology is in the Compucorp 685 word/data processor, manufactured by Compucorp. NASA waived title rights; Caltech granted exclusive license to the inventors, who in turn, transferred their rights to a company they founded called TESLA Company, which sublicenses the converter design and related technology to companies making power supplies for use in their own products.

ICL System 1500

ICL System DRS 15

ICL System DRS 25

ICL Point of Sale Termonal - PoS Terminal 

Web link to BBC SERVICES company who is following activity of ICL-MLADOST company
                                        http://arhiva.bccservices.com/ICL-PressRel/vij1998/vij1998.htm

Intermec - Bar Code Reader - Optical Scanners Bar Code Wand

Telephone Billing Data Polling Computer Systems - ITEC

Meteorology and Weather Systems - ALDEN

Binary numbers  Learn binary numbers