LAB #6

BINARY ADDERS AND OTHER COMBINATIONAL NETWORKS

• Prelab Assignment
  • ...

• Integrated Circuits
  • 7448: BCD-To-Seven-Segment Decoders/Drivers

  • 7483: 4-Bit Binary Full Adder with Fast Carry

  • 7-Segment LED Display

• Laboratory Experiments
  1. Design a circuit to add two 2-bit numbers using a 7483 4-bit adder. Use two switches on the D/A trainer to input one value and two switches to input the other value. The 7483 adds two 4-bit values.

  2. Design a circuit to display the decimal equivalent of a 4-bit BCD value, input via switches on the D/A trainer, on a seven-segment display. Use a 7448 BCD-to-seven-segment decoder to do this. The 7448 runs a common-cathode display and has built-in current limiting resistors.

  3. Combine the two previous circuits to design a circuit to input two 2-bit binary numbers, add them, and then display the result on the seven-segment display.