Sequential Circuits Flashcards Preview

ALC 1st Quiz > Sequential Circuits > Flashcards

Flashcards in Sequential Circuits Deck (31)
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1
Q

Transition in a digital signal

A

Signal Edge

2
Q

Transition from Low to High

A

Rising Edge

3
Q

transition from high to low

A

falling edge

4
Q

if the state change occurs from a low to high

A

active high

5
Q

if the state change occurs from high to low

A

active low

6
Q

time during which the value of the clock signal is 1 or high

A

clock width

7
Q

time between successive transitions in the same direction

A

clock period

8
Q

ratio of the clock width

A

duty cycle

9
Q

reciprocal of the clock period

A

clock frequency

10
Q

it oscilliates between high and low states, produce a continuous output, digital circuits that implement feedback

A

multivibrators

11
Q

free running multivibrator

A

astable

12
Q

one-shot multivibrator and one stable state

A

monostable

13
Q

it causes the circuit to enter the unstable state

A

trigger pulse

14
Q

flip flop that has two stable states

A

bistable

15
Q

the output is only a function of all inputs and any combination of inputs

A

combinational circuit

16
Q

outputs depend not only on the present input value but also the past input value

A

sequential circuit

17
Q

combination of secondary input variables at the given time

A

present state

18
Q

combination of secondary input variables for the next clock cycle

A

next state

19
Q

transition of states and outputs values at discrete instance of time generated by a clock source

A

synchronous

20
Q

transition of states are initiated by the combination of inputs and it has no clock synchronisation

A

asynchronous

21
Q

change state with specific logic and denoted by an enable pin

A

level triggering

22
Q

identified from the straight lead from the clock input

A

high-level triggering

23
Q

identified from the clock input read along with the low state indicator bubble

A

low-level triggering

24
Q

change its state when the clock toggles

A

edge triggering

25
Q

when flip flop is required to respond from low to high transition

A

positive edge triggering

26
Q

when a flip flop is required to respond from high to low

A

negative edge triggering

27
Q

bistable multivibrator that could store one bit of data

A

flip flop

28
Q

an unclocked flip flop

A

latches

29
Q

sets qn of the flipflop to 1 regardless of any logic applied to other input lines

A

preset

30
Q

sets qn of the flip-flop to 0 regardless of any logic applied to other input lines

A

clear

31
Q

constructed by connecting 2 level triggered flipflops in series, it change state after 1 complete clock cycle stage

A

master-slave configuration