3.3-3.4 Flashcards
Binary Counter
Group of flip-flops connected in a special arrangement in which the states of the flip-flops represent the binary number equivalent to the number of pulses that have occurred at the input of the counter
Asynchronous Counter
Type of counter in which each flip-flop serves as the clock input signal for the next flip-flop in the chain
Decade Counter
Any counter capable of going through 10 different logic states
Down Counter
Counter that counts from a maximum count downward to 0
Modulus
The number of states through which a counter sequences before repeating
Modulus N Counter
A counter with a modulus of N
Synchronous Counter
Counter in which all of the flip-flops are clocked simultaneously
Up Counter
Counter that counts upward from 0 to a maximum count
Up/Down Counter
Counter that can count up or down depending on how it’s nuts are activated
Bubble
A circle in a state diagram containing the state name and vales of the state variables
Conditional Transition
A transition between states of a state machine that occurs only under specific conditions of one or more control inputs
Control Input
A state machine input that directs the operation of the machine from state to state.
Mealy Machine
A state machine whose output is determined by both the sequential logic and the combination all logic of the machine
Moore Machine
A state machine whose output is determined only by the sequential logic of the machine
State Machines
A synchronous sequential circuit, consisting of a sequential logic section and a combinational logic section, whose outputs and internal flip-flops progress through a predictable sequence of states in responds to a clock and other input signals
