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Semester 2/Computer Systems Internals & Linux/Week 1/Week 1 Computer Systems Internals.md

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+### Analogue / Digital Communications
+
+#### Summary
+
+Analogue and digital communications are not fundamentally different. They use the same transmission system ( copper / fibre optic cabling / EM waves ); in the 5-stage model, the only difference is the "transmitter" and "receiver".
+Digital communications allow us to send data without errors, but are limited to a binary value, which can be interpreted by the receiver to reconstruct the initial data.
+
+### Bash Scripting