Punch code refers to a special type of code that, when typed through a keyboard, results in a written word or sentence, similar to a predetermined mechanical code. Machines or robots can easily understand this code and it is made for them only. Punch code is a special type of code to be typed with a normal keyboard, which is developed as a mechanical code by a predetermined process. This type of punch code is made to understand any machine etc. Through this punch code, they get a special command. That particular command is in the context of an indication of a particular task. Such a code is called a punch code.
Other questions
What are the poetic devices in the poem ‘The Trees’ by Adrienne Rich?