What is Coding?

Coding is writing precise instructions for computers. Anything with a plug or battery uses code, such as airplanes, credit card swipers, and more. Computers need explicit instructions because they don't inherently know how to react to actions like a mouse click. Programmers must teach computers everything, from basic operations to complex contingency plans, much like giving directions to someone unfamiliar with a car.

The concept of computer programming originated during the Industrial Revolution with Joseph Jacquard in 1801. He created a system of weaving instructions, or code, for his sewing looms using punched cards. These cards, with holes representing binary choices (pin goes through or not, a one or a zero), controlled the threads to create patterns. This idea of machine-readable, recorded information was later adapted by Charles Babbage for mathematical computation with his analytical engine in 1837.

Transistors replaced punch cards as the method for transferring data. Modern computers use billions of transistors, still relying on the basic 'on and off' (binary) principle. Coders use different programming languages like Python, Java, or Objective C. A program is essentially a text file following specific rules, which is then translated into binary (ones and zeros) that a computer can understand. This process involves a compiler converting human-written code into a low-level language, and an assembler then turning it into machine language. Just like letters form words, billions of combinations of ones and zeros create powerful applications like Microsoft Word or iTunes.

The ability to translate human instructions into computer-understandable binary code allows for endless possibilities. Coding can be compared to a chef writing a recipe, where a programmer uses available resources and tools to create something innovative and functional.