What is digital hardware?
Physical quantities represent logical values
- For example, voltage:
- If (0V < voltage < 0.8V), then symbol is a “0”
- If (2.0V < voltage < 5V), then symbol is a “1”
- For example, magnetization:
- One polarization symbolizes “0”, another is “1”
Physical devices compute logical functions of their inputs
- AND, OR, NOT
- Set of values (wires) represent binary integers
Conceptually, how do we compute using hardware???
- What is the underlying basis for digital computation???