User:IanHarvey

IH's To-Do list

• Stuff as discussed on Talk:Technology_of_Television
• Write an article on general pin multiplexing (displays, processor buses, etc)
• Add useful stuff in loudspeakers on enclosure design
• Sort out Filter & friends if others don't get there first
• Bike spannering articles - http://en.wikibooks.org/wiki/Bicycles/Maintenance_and_Repair

Pin Multiplexing

Pin Multiplexing is a widely-used technique in electronics where a number of signals are multiplexed in order to reduce the number of interconnections needed, typically in an integrated circuit or computer bus.

The technique was essential to the development of LSI devices in the 1970s, when the functionality which could be placed on a single chip began to outstrip the ability of the available IC packaging to connect all the required signals to the outside world. For example, a typical pocket calculator may have used 20 keys for inputs, and over 60 seven-segment display outputs, yet the largest DIP packages at the time offered at most 40 pins (of which some were necessarily used for power supplies and clock signals).

Multiplexed Displays

Main article: Multiplexed display

Multiplexed Computer buses

PCI bus

8086 pinout