Difference between Mac and PC???

It depends on how competent your computer skills are. You can maintain a Windows PC and have just as few crashes as a Mac, if you know what you're doing. But if you'd rather let the computer do most of the work for you, then a Mac is a good choice. But also remember, Macs are a lot more expensive than Windows PC's. Sure, PC software WILL drive up the cost considerably, but if you choose wisely, you can find a lot of good free and cheap software that'll save you hundreds.

There are architectural difference (different hardware) between MAC and IBM PC. But the most important differences are MAC PCs are maintained a great level quality both in hardware and software. For this reason it is used mostly by graphics professionals. It is expensive also. On the other hand IBM PCS are easy to upgradable and cheaper. It is popular for mainly Windows OS and gaming facility. At the same time it also suffers some (not a lot) performance issues.