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Using tinkercad
Part 1.
Start your 4-bit binary adder by using 4 buttons as the binary inputs and 4 LEDs to indicate the input bits. Note the 5th led is the carry output. (Co) The buttons toggle the LEDs on and off.
When the first binary number is displayed on the LEDs the Enter/Add button is pressed, the LEDs return to 0000 ready for the next binary number to be entered. The first number is stored.
The second binary number is entered (same as the first) and the Enter/Add button is pressed. The LEDs should now show the result of the addition.
The Enter/Add button is pressed a third time and the LEDs are cleared showing 0000. Ready to add two new binary numbers.
Part 2.
Add an LCD.
Supporting Activities: Introduction to Modems
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