laptop

1. Sujet de premier plan

1.1. Sous-sujet

2. 1-Supercomputer 2-Mainframe computer 3-Minicomputer 4-Workstation 5-PC (Personal Computer)

2.1. smartphones

2.1.1. A smartphone is a cellular telephone with an integrated computer and other features not originally associated with telephones such as an operating system, web browsing, and the ability to run software applications

3. a portable computer, usually battery-powered, small enough to rest on the user's lap and having a screen that closes over the keyboard like a lid.

4. tablet

4.1. A tablet is a wireless, portable personal computer with a touchscreen interface. The tablet form factor is typically smaller than a notebook computer, but larger than a smartphone.

5. desktop

5.1. A desktop is a computer display area that represents the kinds of objects one might find on top of a physical desk,