Hardware and Software

Usually, things you can see and touch on a computer or inside a computer are called "hardware" whereas programs for the computer (digital instructions) are called software. Software is created by a computer programmer who writes lines of code for the computer. An interpreter or compiler is a smaller program which changes the programmer's code into machine instructions for the central processing unit. After much testing and debugging, the programmer's code is finally "packaged" into executable files which make up the final "software" which can be purchased later, or might be "bundled" with the computer when you buy it (meaning that some software is already installed when you buy the computer.)