A program is any set of instructions that is created or followed . In this book, we
focus on writing computer programs, which are lists of instructions that a com-
puter carries out . These instructions can be written and stored in various forms .
Some of the first modern computers used punched cards, switches, and cables .
Early analog music synthesizers were a type of computer that used a patchbay
style interface to manually allow a programmer to create specific sounds .
developers in adding dynamic features to websites . The language was initially
created in 11 days and released in 1995 by a company called Netscape . Developed
by Brendan Eich, its original release name was LiveScript . When Netscape intro-
to home automation systems .