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For Educators · Binary Adder

Binary Adder for a PCB trace

Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate a PCB trace live below — adjust the inputs and watch it respond, right in your browser.

Binary Ripple-Carry AdderLive

how computers add

01010011

+ 00111010

01110010

= 10001101

amber = carry chain

Controls

Presets

A ripple-carry adder chains full-adders: each bit adds A, B, and the carry from the bit below, passing its own carry upward. That carry ripple is why simple adders slow down as they get wider. Educational tool.

▶ Run in Python

Data Inspector

A + B (decimal)83 + 58 = 141

8-bit result10001101

Carry out0

Governing equation

S C_{o u t} = A \oplus B \oplus C_{in} = A B + C_{in} (A \oplus B) = 0

Reading this result: A carry is generated in 4 of the 8 columns, and each one must wait for the column below it — that wait is why wide ripple adders slow down.

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Frequently asked questions

Is this good for educators?: Yes — this version of "Binary Adder for a PCB trace" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.