Number on LCD

Every digital device worth the name spells its numbers with seven bars: a, b, c, d, e, f and g. Top and bottom horizontals, four verticals, and the middle separator - lit in fixed patterns they form every digit, from the two-bar 1 to the full seven-bar 8. Turn an input number into that hardware spelling and you get instant, monospace-drawn ASCII art: 1964 reads like a calculator, because it is built exactly like one.

Number on LCD draws any number of up to 40 digits in this seven-segment style. Each glyph is a three-row bitmap, printed side by side, and every digit is annotated with the segments it lights and the count. Copy the drawing for lesson plans, bumpers or t-shirts; download the same art as text. Runs entirely in the browser.

• Real seven-segment logic: Standard a-to-g wiring, the same patterns as hardware LCDs.
• Up to 40 digits: Whole numbers, no leading-zero stripping, negative sign supported.
• Per-digit annotations: Every glyph is followed by its lit segments and a count.
• Alignment-safe: Fixed-width glyphs keep the drawing aligned in any monospace view.
• Copy or download: The full ASCII artwork exports in one click.
• Reference tab: The a-to-g legend and all ten digit bitmaps.
• Free and private: Everything runs locally - nothing is uploaded, stored or logged.

1. Type a number - up to 40 digits, with an optional leading minus.
2. Draw it - the seven-segment glyphs appear immediately.
3. Read the annotations - lit segment letters and counts per digit.
4. Check the reference - the a-to-g diagram for all ten digits.
5. Copy or download the artwork for documents and displays.

Example 1 - The classics. Draw 42: four shows f, g, b, c and two shows a, b, g, e, d - two five-bar and four-bar shapes side by side, exactly as a clock would render them.

Example 2 - Sparse and dense. Draw 17 and 8 next: 1 lights two bars, 8 lights all seven - the cheapest and the most expensive digits on the panel.

Example 3 - A long number. Draw 1234567890: the ten digits run across with every pattern from two bars to seven - the whole alphabet of a seven-segment display in one line.

Example 4 - The sign. Draw -27: the minus is rendered as the middle bar only, exactly as LCDs print negative values.

Example 5 - Copy the art. Draw 3141592653, hit Copy, and paste into a text editor: the monospace alignment survives because every glyph occupies exactly three columns plus a space.

• Hardware accuracy: Segment sets match real seven-segment wiring, bar for bar.
• Instant feedback: The drawing updates as you type - no buttons needed.
• Pedagogical: The a-to-g annotation teaches how digital displays actually work.
• Portable art: Aligned ASCII exports cleanly to docs, slides and consoles.
• Zero setup: No fonts, no graphics - just text, in the browser.
• Private and free: Nothing is uploaded, stored or logged.