What is the SW model 17?
I assume you are asking about a Smith & Wesson Model #
17.
If so, it is a 6 shot .22 cal. revolver, sometimes refered to as a
"K-22 masterpiece". The "K" stands for the particular S & W
frame size. This is a very finely made revolver, quite often used
in target competition.
What the development stages of computer are?
Not sure what you are really asking but this might be an answer: System specification Requirements analysis Design (HW & SW) Prototype construction SW prototype integration Prototype test Redesign to fix Prototype Production model construction SW final integration Production model test System test Production Maintenance and support