Exam 2 Review Flashcards
(17 cards)
A circuit is combinational if….
the circuit’s output values depend solely on the present combination of input values
A circuit is sequential if…
the circuit’s output values depend not only on the present input values, but also on the sequence of past values
FSM is a computation model that…
can describe sequential behavior
pulse
changing of a signal from 0 to 1 back to 0
enable
An input control that controls whether a behavior occurs
controller
circuits consisting of a register and combinational logic
state register
register in a controller, holding an FSM’s present state
In a controller’s circuit, the logic’s outputs are:
FSM’s outputs and the next state bits
The required state register bits are…
based on the number of states
FSM has single-bit…
inputs and outputs
What does a slash through a wire represent?
wire represents multiple bits
a high-level state machine is…
a form of extended FSM that supports multibit data input/output data operations
datapath
circuit that supports the data operation and data storage parts of system behavior
instantiate
introduce an item to a circuit
instance
each instantiated item
In datapath, each data output and variable require…
a register
