Overview
The 0.7-inch Single Digit 7-Segment LED Display is a bright, easy-to-read numeric module featuring 7 distinct lighting segments plus a decimal point (DP). This specific variant utilizes a Common Anode (CA) internal configuration, where all internal LED anodes are hardwired to a shared power pin ($V_{CC}$). To light up a specific segment, your microcontroller or driver IC simply needs to pull the corresponding segment pin down to Ground (LOW). It is highly popular among engineering students for building basic digital clocks, frequency counters, and stopwatch timers.
Key Features
High Contrast Readout: Large 0.7-inch character height ensures clean visibility even from a distance.
Common Anode Internal Circuit: Simplifies wiring when pairing with shift registers or standard sinking-current display drivers like the 7447 IC.
Vibrant Red Illumination: Low power consumption with uniform light distribution across all segments.
Breadboard & PCB Friendly: Standard dual-in-line (DIP) pin spacing allows for effortless prototyping on breadboards or custom PCBs.
Expandable Layout: Mount multiple units side-by-side to create multi-digit display panels.
Technical Specifications
| Feature | Specification |
| Digit Count | 1 Digit |
| Character Height | 0.7 Inch (Approx. 17.8mm) |
| Circuit Type | Common Anode (CA) |
| Emitted Color | Red |
| Forward Voltage ($V_F$) | 1.8 V to 2.2 V per segment |
| Max Current per Segment | 20 mA |
| Pin Configuration | 10-Pin Standard DIP Layout |
Pin Identification Quick-Guide
Common Pins (Pins 3 and 8): Connect to your positive power source ($+5\text{V}$ or $+3.3\text{V}$ through a current-limiting resistor).
Segment Pins (a, b, c, d, e, f, g, DP): Connect to the digital output pins of your microcontroller or driver IC. Pull LOW to turn the segment ON.
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