The laptop is a computer wich we can put on our lap , the palmtop is smaller so we can hold it in our hand .
The text message is a colloquial term referring to the exchange of brief written messages between mobile phones, over cellular networks, and the email is is a method of exchanging digital messages, based on a store-and-forward model.
The keyboard is a device with many keys, and the deskop refers to the surface of a desk. The term has been adopted as an adjective to distinguish office appliances which can be fitted on top of a desk from larger equipment covering its own area on the floor.
The software is a general term used to describe the role that computer programs, procedures and documentation play in a computer system and the hardware is a general term for the physical artifacts of a technology. It may also mean the physical components of a computer system, in the form of computer hardware.
The printer is a computer peripheral that reproduces text and/or pictures on paper or other kind of printable surface and the scanner is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image.
The floppy disc is a data storage medium that is composed of a disk of thin, flexible ("floppy") magnetic storage medium encased in a square or rectangular plastic shell and the CD-ROM is a pre-pressed compact disc that contains data accessible to, but not writable by, a computer for data storage and music playback.