Stage 2 Reference Pack

7-Segment And CD40110

This page keeps the seven-segment display and CD40110BE support images in one place so the Stage 2 counter build can be checked against pinouts, segment labels, common-cathode/common-anode type views, integrated resistor modules, datasheet snippets, and Proteus captures.

CD40110 example wiring to a common-cathode seven-segment display

Common Cathode 330R Per Segment Clock Up / Down Carry / Borrow

Use this as the fast visual check for the Stage 2 display chain before moving back into the Proteus project files.

Quick Use

Pinout, Segment, And Wiring Checks

The supplied images cover the main Stage 2 checks: matching each segment letter to the physical display pins, confirming the difference between common cathode and common anode packages, verifying the CD40110BE pin functions, checking the resistor-per-segment wiring used by bare displays, and identifying common-cathode display modules that already include their resistor network.

For this project the display must be common cathode. If you use a bare seven-segment part, keep one resistor per segment. If you use a common-cathode module with built-in resistors, the extra resistor bank is not required.

Open Stage 2 Page Open Proteus Page Open Two Counter Project

Fast Checks

Stage 2 Wiring Rules

Keep these checks beside the gallery while wiring the display stage.

Display Type

Use common cathode displays so the CD40110BE can sink the segment pattern correctly.

7 x 330R

Segment Drive

Bare displays need one resistor per segment. Integrated resistor modules are the exception because the resistor network is already inside the part.

UP / DN

Clock Inputs

The Stage 1 detector must deliver clean pulses into CLK UP and CLK DN to keep the count stable.

C / B

Cascade Pins

Carry and borrow lines are what extend the count from the units digit into the tens digit.

Display Anatomy

Seven-Segment References

Segment-letter maps, package views, and pin-identification images for matching the real display to the circuit.

Counter Driver

CD40110 And Segment Drive

These images focus on the counter IC, segment decoding, and the pin-level connections into the display.

Build Captures

Proteus Stage 2 Images

Use the original project captures to compare your working circuit against the saved Proteus files.

Continue

Stage 02

Counter Display

Return to the full Stage 2 page with the one-counter and two-counter Proteus project links.

Proteus

Simulation Guide

Open the Proteus install notes, search mapping, and bundled project downloads.

Complete

Full Circuit

Jump to the integrated project once the display stage is behaving correctly.