Computer Architecture - Nguyễn Trí Thành

Digital Representation
Digital is an abstraction of analog voltage
Voltage is a continuous, physical unit
Typically ranging from 0 to 5 volts on PCs
Digital logic abstracts it to 2 distinct levels  “1” or positive (typically 2.5 V or greater)  “0” or negative (typically less than 1 volt)
Eases design and manufacturing