when would one chose to use proto-board or chose to manufacture the real PCB?

which is best?

 

Use proto board for circuits that meet these criteria:
- only building one or two
- no highly noise-sensitive circuits
- digital clocks are below 35MHz
- analog processing below 5 Mhz
- current peaks below 5 amps
- circuit complexity includes fewer than 6 digital Ics and 5 analog ICs and 15 discrete transistors
- overall size is less than 15 x 15 cm

otherwise use a pcb

Absolutely use a pcb for these:
- when building more than 5
- multi-chip digital circuits clocked at greater than 60 MHz
- analog/RF circuits operating above 200 MHz
- when constructing one or more prototypes for a paying customer

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RadioRon

 

RadioRon makes some good points, here are a few more:

Proto boards are also cheaper in small quantities, easier to modify and quicker to build (usually). I always keep a small supply of proto boards on hand for small projects, and find they're usually a good choice for most projects.
Generally proto boards are a good choice with an initial design, this is especially true if you might later modify it ...and yes you will modify it

With circuit board manufacture. there's either etching it yourself, or paying to have someone else etch it. If you do it yourself you have etchant to deal with, board design, layout etc. If you have a PCB manufacturer make your board(s), you pay to have boards made and there is also a slight delay in receiving your boards. If you don't discover an error, until after you get the boards back, you're stuck with them. On the plus side, a commercially made PCB looks much nicer than either a protoboard or home etched PCB.
A PCB is a good choice after you've perfected your design, and can be much quicker to assemble, especially with multiple boards.

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When I take over, Alcohol, Tobacco and Firearms will be a 24-hour convenience store.

 

Hi can you tell me what is the meaning of a Proto boards?

Is that vero boards? or is that Breadboards? or is that plain copper boards that we can transfer our drawing to it?

 

They mean any of the various proto board designs you can find at electronics supply stores, they can be pretty simple perfboard with copper surrounding the holes or small two-three hole bus strips for basic point to point wiring. I picked up some from MPJA.com that are complete PCB recreations of your basic breadboard layout.

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