DIG 2000 Lecture Notes - Lecture 2: Marshall Mcluhan, Nibble, Control Unit
Document Summary
Whenever we put something into a computer it becomes data: analogue- measures variations in data through a continuous wave of stream of information, digital- measures variations of discrete intervals of stream of information. Sampling is when we look at waves, we can sample it discrete points. Analogue leads to accurate data, but there are noise limits. Digital allows for perfect replication but not totally accurate data. John voneumann formed idea of storing programs. Computer continuously fetches sequences of information, decodes information and then does what it is supposed to do. 4 parts of a computer: alu- arithmetic logic unit, control unit- sends and receives information from memory, memory- sequence of # cells. Ram- random access memory, use to read and write. Rom- read only memory: input/output- a. k. a io, output decodes data as we understand it. Bus- a bundle of wires that delivers information from different parts.
