To build Flip-flop( SR/RS, clocked RS) circuits using NAND gates.

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 Aim: To build Flip-flop (RS, Clocked RS) circuits using NAND gates.


Material required: IC7400, A digital microcontroller(timer), A Breadboard, A Battery(5V), 2 LEDs, Connecting wires.

Theory: 

The cloaked RS flip-flop is an extension of the basic RS flip-flop that include an additional clock input (CLK) to control the timing of the state changes. This clock signal ensures that the flip-flop only changes state at specific times, synchronized with the clock pulses. The clocked RS flip-flop has three inputs: Set(s), Reset(R) and Clock (CLK) and two outputs: Qn and Qn+1.

Procedure: 

  1. All the ICs and other components were checked for defect.
  2. The breadboard was set-up with the components.
  3. All combination of input and output was verified from the truth table
    .

Observation table: -

circuit diagram and truth table:

sr truth table, sr circuit diagram, sr, SR, flip flop, basic flip flop
click on picture to get clear view



SR Flip-Flop Truth Table

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S     R      Q (next state)  Q' (next state)
0 0 Q Q'
0 1 0 1
1 0 1 0
1 1 Invalid Invalid


Result: Flip-flop (RS, clocked RS) circuit was built and verified using the NAND gates.


Precautions:

  1. Make sure the apparatus is not defective.
  2. Make sure connecting wire is not loose.
  3. Never touch live wire.

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