Simplified Model of Design Representation
Clocked, Synchronous Sequential Logic Circuits & Systems
As below, but the output depends only on the previous input values
at times determined by the value(s) of a special "clock" signal.
e.g. Microcomputers, DSPs, controllers, some I/O devices.
Asynchronous Sequential Logic Circuits & Systems
As below, but output depends on previous inputs and the order
in which they changed - from the moment the power was turned on!
e.g.. Latches, many I/O systems, some high-speed circuits.
Combinational Logic Circuits & Systems
Digital: Binary, output is independent of previous inputs
and is always the same if you wait long enough (no storage).
e.g. Decoders/Encoders, format converters, full adder
Physical Design
Analog (Voltages & Currents): Noise, power, heat, wires, size, etc.
e.g. ICs, Boards, Modules, Boxes, Systems
Simplified Model of Design Representation
changing role of time