Update

computer.md

@@ -12,6 +12,27 @@ We can divide computers based on many attributes, e.g.:
 - by **computational power**: how difficult problems the computer is able to solve, i.e. where in the [Chomsky hierarchy](chomsky_hierarchy.md) it stands (typically we want [Turing complete](turing_completeness.md) computers)
 - by **other criteria**: price, reliability, durability etc.
 
+```
+            ______________
+           |  ________  | \_
+           | |>..     | |   \
+           | |        | |    ]
+           | |________| |  _/
+    ___    |____________|_/'.    ___
+   /.\ \        \...../      '. /.\ \
+  |;:;| |  _____/_____\_____  :|;:;| |
+  |;:;| |:| [][] ,,,___  |  |.'|;:;| |
+  |___|_| |______________|__|:.|___|_|
+                      __...--':
+                 .-'''    .-'' 
+     ___________;__     _:_
+    /:::::::.::'::/|   /-'-)
+   /:::::::'.:.:://   (___/ 
+   """""""""""""""   
+```
+
+*Typical personal computer, with case, monitor, keyboard, mouse and speakers.*
+
 Computers are theoretically studied by [computer science](compsci.md). The kind of computer we normally talk about consists of two main parts:
 
 - **[hardware](hw.md)**: physical parts