Circuit Board
Flexible Circuit Boards have varied uses and features
Flexible printed circuits are widely used today because of low cost, ease of assembly in interconnection systems, and the low volumes that they occupy. Board-to-board, board-to-chip, and chip-to-chip connections are areas where they are most used. They are also essential in packages with limited space and stacked rigid boards, thus demanding three-dimensional connections. The largest of use of flexible circuits can be seen in portable electronic products. These include notebook (NB), mobile phone, personal digital assistant (PDA) and information appliance (IA). The flexible printed circuit board, for example, can work as an interface between a liquid crystal display (LCD), a floppy disk driver (FDD), a hard disk driver (HDD) or a compact disc read only memory driver (CD-ROM) to a motherboard. Such is the wide usefulness of Flexible circuit boards.
Flexible circuits with optical and electrical components have become essential since optoelectronics has spread into more and more applications. Prefabricated optical fibers are used to assemble flexible circuits in such situations. Wherever fiber management is needed flexible circuit boards are used. Flexible optical circuits, for example, greatly used as as optical backplanes in order to interconnect a number of printed circuit boards. These can also serve as ribbons of optical fibers in order to route the optical fibers in an designated
There are four types of flexible printed circuit board. This division is based on functions. They are: lead line, printed circuit, connector, and integration function system. The flexible circuit connector includes an insulative housing mounted to the rigid circuit board. In all, it is obvious that with such varied features and uses flexible boards have emerged as a top choice as far as the electronic industry is concerned today.
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For more information on printed circuit board manufacturing log on to http://www.a-flex.com/Flexible.html
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can anyone tell me how to make a Analog to Digital circuit on circuit board instead of using PC parallel port ?
I dont want to use parallel port using pc , i want to use electronical components on circuit board , please help.
It's not an either or situation. PC parallel port is not a prototype platform, it's a way of sending data into or out of a PC.
So yes, you can build a AD on a PC board. Look at the Analog Devices web pages and pick a suitable AD for your application, or at that National Semi web pages. There are thousands.
Get the data sheet. They will usually contain a schematic. Get the parts and go from there.
But what are you going to do with the 8 or 12 or 16 bits of data (depending on which AD you pick) you get from it. You can get 16 bits every microsecond on some parts. That's 2 million bytes every second. You need to send it somewhere.... perhaps to the PC parallel port?
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