Page 67 - DK Children's Encyclopedia

Coding SEE ALSO

▸ ▸ Codes p.66–67
▸ ▸ Communication
Computers follow instructions from special programs. p.69
These instructions are known as code, and writing ▸ ▸ Computers p.71
them is called coding. Code can be written in many ▸ ▸ Internet p.138

different coding languages. ▸ ▸ Language p.144
▸ ▸ School
pp.272–273

Computer languages
Programming languages tell
computers what to do. This
example shows a text-based
language called Python.

Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 26 2016, Hello World!
10:47:25)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on
Darwin
Type “copyright”, “credits” or “license()” for
more information.
>>>
The first
print ( ‘Hello World!’)
programmer was
Lady Ada
Lovelace
(1815–1852).
Input Output
Instructions are typed into a text When the program is run, it follows the
window. These instructions tell the typed instructions. Here, the computer
computer to show, “Hello World!” screen shows, “Hello World!”

Learning to code
Some computer
languages are easier
to learn than others.
Scratch uses colorful
blocks of code that you
can arrange to make your
own games.

Output Input
The blocks control In Scratch,
the actions of the coding is done by
characters here, on putting together
the “Stage.” instruction blocks.

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