MOD002556
17/02/2014
13:00-16:00
How computer's work...
A bus is a set of wires along which flows information (32 bit processor will have 32 bit wide buses)
Data Bus: Data and instructions moving between processor, memory and I/O devices
Address Bus: The address of a memory location or I/O device
Control Bus: Control information synchronising operation of processor memory and I/O devices. Neil Hately.
Electrical basics
Voltage: Measured in electrical potential: Volts/Joules per coulomb is the electrical potential difference between two points.
Current: An electric current is a flow of electric charge. In electric circuits the electric charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both electrons and ions such as in a plasma. Current flow is measured in amps.
Resistance: A measure of the degree to which conductor opposes an electric current through it. http://en.wikipedia.org/wiki/Resistance
Power: The rate at which electrical energy is transferred by a circuit
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