Printed Wiring Boards Discrete-wire

A Assemblies, subassemblies Amplifier using discrete components, magnetic amplifier, laser, maser, printed wiring board... 

Size is often the primary driver for MCM-based systems. The typical multicomponent discrete assembly provides a sihcon-to-board efficiency of <10 f>ercent (actual total die area versus the total printed circuit board area). MCM technology can often increase the sdicon-to-board efficiency to 35 or 40 percent with chip and wire assembly processes, and to 50 percent or higher with some of the higher-density processes. Thus, with reduced size and weight, MCMs offer a practical approach to reducing overall system size while providing enhanced performance due to a reduction in the interconnect distance between chips. Multichip modules typically use three to five times less board area than their equivalent discrete solution. ... 

Cell-phones, iPODs, digitial cameras, laptops and desktop computers, DVDs, and indeed all electronic equipment in our world have one thing in common They each contain an electronic assembly composed of integrated circuits and discrete components soldered to a printed wiring board (PWB) to create an electrically functional circuit. 

Printed circuits were developed in the USA during World War II primarily to reduce weight and space and increase reliability in military equipment. This technology replaced discrete wiring of electrical components which was previously accomplished by the use of terminal boards and point-to-point wiring and soldering. 

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