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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 single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
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