# 8051 microcontroller

8 Hacker News commenters recommended 8051 microcontroller and 4 criticized it, November 2025 to November 2026. It was recommended in 7 of 13 months.

**Verdict:** Recommended for embedded jobs that don't need 16 or 32 bits, with decades of tooling. Critics find its old tooling and 8-bit ALUs painful.

## Why people recommend it

- Good when 16 or 32 bits aren't needed (2 comments): "I do think 8051 is better when you don't need 32 or even 16 bits." ([source](https://news.ycombinator.com/item?id=49315768)) "8051 is better when you don't need 32 or even 16 bits" ([source](https://news.ycombinator.com/item?id=49318309))
- Long-lived and still in use (2 comments): "The 8051 is eternal, it will probably outlive x86 and ARM." ([source](https://news.ycombinator.com/item?id=48166891)) "It's still alive and kicking." ([source](https://news.ycombinator.com/item?id=46228969))

## What people warn about

- Old, cumbersome tooling (2 comments): "anything is better than an 8051 core you need a copy of Keil C51 and a lot of patience" ([source](https://news.ycombinator.com/item?id=49306532)) "not having to work with ancient 8051 tooling and 8 bit ALUs" ([source](https://news.ycombinator.com/item?id=49314871))
- Considered inferior to newer chips (2 comments): "RISC-V is an improvement over PIC and 8051" ([source](https://news.ycombinator.com/item?id=49332561)) "Yeah, so was 8051 and it sucked too" ([source](https://news.ycombinator.com/item?id=49313181))

## Alternatives hackers recommend

- [ESP32](https://hackerapproved.com/p/esp32.md): 190 recommend
- [Arduino boards](https://hackerapproved.com/p/arduino.md): 81 recommend
- [Raspberry Pi Pico](https://hackerapproved.com/p/raspberry-pi-pico.md): 72 recommend
- [Raspberry Pi RP2040](https://hackerapproved.com/p/rp2040.md): 29 recommend
- [ESP32-S3](https://hackerapproved.com/p/esp32-s3.md): 26 recommend

## Where to get it

- [See price on Amazon](https://www.amazon.com/s?k=8051+microcontroller+development+board&tag=hackerapprove-20) (affiliate link)

## Cite as

Hacker Approved, "8051 microcontroller", https://hackerapproved.com/p/intel-8051-microcontroller/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).