The first difference is mobility. Notebook itself is supposed to be carried. In theory, PC is also can be moved from one place to another, but anyone who has at least once done that, knows what a problem it can be. Here we get, that size, weight and switching is the first difference between laptop and PC.
The second difference is the possibility of upgrading. When it’s about PC, there are no difficulties, but if you own a laptop you can forget about upgrading. What can be done with a laptop? You can enlarge the memory if your laptop is rather new. Finding memory for old notebooks is almost impossible, and you happen to find it, it will be way expensive. Then the capacity of a hard drive can also be enlarged. But, again, it will be a bit expensive. The same situation is with the processor. All these replacements are possible, though very problematic and expensive. Talking about replacing video subsystem, audio card, and monitor I can say that you just have to forget about it.
The third difference is a lot of laptop built-in devices. Almost every notebook has DVD/CD-RW, most of laptops have ports for digital camera connection, every notebook has a storage battery (what can’t be said about PCs), LCD-monitor, card-reader and any wireless devices such as Bluetooth, Wi-Fi, GSM-GPRS, built-in infrared ports and many others. Laptop appears to be more technologically developed device than a PC.
The next difference is a keypad. It’s understood that many laptops have not full sized keypad. And the location of buttons differs from that on the PC keypad, and at first it’s kind of confusing. There no laptops with non-LCD displays. The advantages of such monitors include low power consumption, extremely low level of electromagnetic radiation, almost perfect geometry and absence of flickering.
Many modern laptops have built-in Bluetooth or Wi-Fi. GPRS-modems are also becoming more and more popular. And in general, most of the wireless net devices are produced for notebooks.
And one more difference that can’t be ignored – this is efficiency. When it’s about efficiency, PC is always better than a laptop. It’s connected with laptops mobility – PC is always plugged in, and notebook is supposed to work from a storage battery, at least sometimes. Cooling system in a laptop is not as good as in a PC. When notebook is overheated it starts working worse than usually. That’s why, PC of the same configuration as a notebook will always work much better. Now you’ve got the idea about differences between PCs and laptops, and it’s up on you to decide what device to choose.