Inspired by Don Lancaster's famous article about a tiny self-made display, attached to an ASCII Keyboard (Popular Electronics, issue April 1974). It displays the character on a 5x7 dot matrix display. The binary row address is shown by LEDs and you can see how the display is being built up by stepping through the 7 horizontal scan lines. The clock speed can be adjusted from 0.6 Hz to 800 Hz.

Connect an Apple-1 or Apple 2 keyboard directly using the DIP-16 connectors, or use the ASCII Data In pins. Verify the ASCII input to the character generator using the character address LEDs. A power supply with +5V and -12V is needed as a minimum. The -5V is regulated on the board itself. Provide +12V when this voltage is needed by the attached keyboard. Supported character generators: Signetics 2513, 2316B, 2716 EPROMs and 2816 EEPROMs. Extra, feed the 8-bit counter output to other experiments!

Unsoldered kit comes with the pcb, all parts, schematics and bill of materials. The keyboard and character generator ICs in the pictures are for illustrative purposes only and are not part of the kit.

Questions? Just ask!

- Shipping is tracked (you receive the tracking number), unless impossible to your country.

- No insurance, my experience is this is a farce anyway.

- Item ships within 3 business days.

- Delivery is usually done within 10-15 business days, but may rarely take 4 weeks.