No.
Yes, you can bring a desktop computer on a plane as part of your carry-on luggage, but it will need to be screened separately at security.
No. Communications to and from the second computer would not route correctly.
the main part of a computer system is called central processing unit or also known as CPU
A desktop saves memory in the CPU. When one wants to access information, the random access memory, or RAM, is used. The amount of memory a computer has depends on the size of the CPU.
Anything you can touch or pick up is hardware. Everything else is software.
It does what the name implies: it finds applications for you. If you have trouble finding an application, like accidentally taking off the address book off of your dock and can't manually find it in the Macintosh HD, Finder searches for it for you, and tells you how much space are in each part of the laptop. For example, it may tell you that you have 10 gigabytes of space left on the desktop, but only 300 megabytes left in the movies folder. It basically searches through every folder and everything and customizes the Mac HD to fit your needs.
A tower is the part of the computer which all the main devices are located. The tower is where you first turn your computer on. A desktop is the same thing, a desktop consists of a Tower, Monitor, Keyboard, Speakers, and a Mouse.
Work area
I'm not sure if you mean the foundation of Mac OS X itself, or of the desktop. The desktop is a part of Mac OS X's Finder application which is written by Apple from scratch in Objective-C using the Cocoa framework. Mac OS X itself's core is Darwin, a UNIX operating system based on the open source FreeBSD.
style sheet
Lenovo desktop computers are manufactured in China. Certain parts may be manufactured in the United States, but for the most part they are made in China. In fact, they will say made in China on the bottom of the computer.
The system unit is the part of the computer that holds the motherboard, power supply and storage. The different types of system units are desktop, tower, mini-tower and notebook.