# Electronic clock kit, AT89C2051

> DIY kit for building a fully functional electronic clock with display, based on the AT89C2051 microcontroller. Power supply 6-12V, PCB dimensions 90 x 70mm. Assembly requires attention to component polarity (electrolytic capacitors, LEDs, IC) and needs 3 jumpers. The firmware can be rewritten using the .bin file available in the Download section with a compatible programmer.

- Page: https://sigmanortec.ro/en/electronic-clock-kit-at89c2051
- Price: 28.17 RON
- Availability: In stock; 1-2 zile
- Reference: 33402 · EAN: 5945867207917
- Category: Mechatronics and IoT > The Kit > DIY Electronics Kits
- Package (shipping data): 0.039 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 03:52 (Europe/Bucharest)

## Description

DIY kit for making a fully functional electronic clock with display, ideal for learning and electronics projects. It uses AT89C2051 microcontroller, operates on 6–12 V power supply, includes 90 x 70 mm PCB for quick assembly, and the firmware can be rewritten with the .bin file available at Download, using a compatible programmer.
DIY kit for building a fully functional electronic clock with display.
Specifications:
Chip: AT89C2051 (insert respecting the correct orientation, see PCB)
Power supply voltage: 6 - 12V
PCB dimensions mm: 90 x 70mm
Be careful when assembling this!!! Respect the polarities and mounting direction of the components (electrolytic capacitors, LEDs, and IC); all are marked with plus or minus signs (the IC has a crescent moon). After assembly, 3 jumpers are also required. Also be careful with the button installation.
In case you need to reprogram the AT89C2051 IC, we provide the .bin file in the Download section. You will need a programmer to write the file.