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Digital Electronics
NUMBER SYSTEM
BINARY CODES
BOOLEAN ALGEBRA
K MAPS
COMBINATIONAL CKT
SEQUENTIAL CIRCUITS
INTRODUCTION
CLOCK
BISTABLE MULTIVIBRATOR
DERIVATION of FLIPFLOP circuit
RS FLIPFLOP
RS FLIPFLOP(NAND IMPLEMENTATION)
R'S' FLIPFLOP
Clocking RS LATCH
Other LATCHes
Timing problem in LATCHES
MORE QUESTIONS
TIMING CIRCUITS

 

BISTABLE MULTIVIBRATOR

FLIP-FLOP is another name of Bi-stable Multi-vibrator. A flip-flop is the basic element of sequential circuit. It has the capability of storing 1 bit. The circuit of the Bi-stable Multi- vibrator using transistors is as follow:

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The two transistors are used to store a single bit and they can hold data without external assistance as far as power is supplied to the circuit. If Q is high we get high as an input to the transistor T1 and hence Q bar is low and as Q bar is low we get LOW as input to transistor T2 and hence Q is HIGH. We can see how output is maintained by the circuit itself. So we don’t need t refresh the circuit again and again.

 

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