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The Shift Register is one of the simplest and most useful Integrated Circuits. Using the Clock and Data pin, you can enter 8 bits into the outputs. This circuit only uses the first 4 bits.

In this circuit the top pushbutton controls the clock pin and the bottom pushbutton controls the data pin. To enter a high, hold the data pushbutton down and press the clock pushbutton. To enter a low, just press the clock pushbutton alone. More on this at RealCircuits.com

Parts List

  • Shift Register
  • Red LEDs (4)
  • 1000 Ohms Resistors (4)
  • 104 Ceramic Capacitor
  • Jumper Wires
  • Pushbuttons (2)

Step 1: JK Flip Flop

This is a useful circuit and can be used in place of a switch. This JK will change the LED every time the pushbutton is pressed. Both of these are from the first kit.

Part List

  • JK Flip Flop
  • Red LED
  • Pushbutton
  • 104 Ceramic Capacitor
  • 1000 Ohm Resistor
  • Jumper Wires

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