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A red 4-digit 7-segment clock display with 0.56″ (14.2 mm) digit height. Each digit includes a decimal point, plus a centre colon for time-based displays. Br...

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A red 4-digit 7-segment clock display with 0.56″ (14.2 mm) digit height. Each digit includes a decimal point, plus a centre colon for time-based displays. Bright at 18 mcd, these displays are easy to read and can be dimmed by reducing drive current to save power.

This is a raw multiplexed common-cathode display — it requires external driver circuitry such as a shift register (e.g. 74HC595) or dedicated LED driver. You'll need 8 microcontroller pins or a shift register to control the anodes (~15 mA each), and NPN transistors or a high-power shift register to sink up to ~160 mA per digit on the cathode side.

Key Features

  • 4-Digit 7-Segment Display – Plus decimal points and centre colon
  • 0.56″ Digit Height – Clear, readable digits
  • 18 mcd Brightness – Bright red LEDs, adjustable by varying drive current
  • Common Cathode, Multiplexed – Standard configuration for driver ICs and shift registers

Specifications

  • Digit Height – 0.56″ (14.2 mm)
  • Colour – Red
  • Brightness – 18 mcd
  • Max Current per Segment – 20 mA
  • Configuration – Common cathode, multiplexed
  • Segments – 7 segments + decimal point per digit, plus centre colon

Ideal For

  • Clocks and timers
  • Counters and scoreboards
  • Instrument readouts
  • Arduino and microcontroller display projects

Package Contents

  • 1× Red 4-Digit 7-Segment Clock Display (0.56″)
Note: This is the raw display only — no driver or backpack is included. External driver circuitry is required.

Jargon buster

Plain-language definitions for the technical terms used above.

LED driver
An LED driver is a control chip or circuit that supplies and switches power to LEDs. For a display board, it reduces the number of microcontroller pins needed and handles tasks like lighting the right segments and adjusting brightness.
microcontroller
A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
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