The Atmel AT89C2051 is a low cost microcontroller in a 20-pin DIL package. It runs MCS-51 (commonly termed ‘8051’) code. It works from 2.7V to 6V at anything from 0 Hz up to 24 MHz. It has 2K bytes of Flash memory to hold the program and 128 bytes of RAM. It has 15 I/O… Continue reading An Arduino-based programmer for the AT89C2051 chip