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f-alpha.net » Electronics » Digital Electronics » Digital Comparator » Let's go... » Experiment 7 - 4-bit Magnitude Comparator

Experiment 7 - The 4-bit Magnitude Comparator

In order to use the C-MOS 4063 as a 4-bit Mmagnitude comparator, you first need to connect the inputts X0, X1, X2, X3 and Y0, Y1, Y2, Y3...

Circuit diagram 4-bit magnitude comparator mit dem C-MOS 4063.

In addition, the C-MOS 4063 has three more inputs (X<Y, X=Y and X>Y ). These are the so-called "cascading inputs". In the case of a 4-bit magnitude comparator these inputs are not used and therefore are connected as follows...

  • X<Y = 0
  • X=Y = 1
  • X>Y = 0

With the circuit shown you set up a 4-bit magnitude comparator...

Circuit 4-bit magnitude comparator with C-MOS 4063. (Enlarge)

In the next experiment you build an 8-bit magnitude comparator with two C-MOS 4063 in a cascade...

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