Abstract: timer using AT89c51 ASSEMBLY LANGUAGE FOR AT89C51 programmer circuit for AT89c51 AT89C51 microcontroller programming AT89C51 lock bit introduction to microcontroller AT89C51 8086 assembly language for parallel port atmel AT89C52 PROGRAMMER AT89C51 PROGRAMS Text: Microcontroller Using a Personal Computer to Program the AT89C51/C52/LV51/LV52/C1051/C2051 Introduction This application note describes a personal computer-based programmer for the AT89C51/C52/LV51/LV52/C1051/C2051 Flash-based Microcontrollers. The programmer supports all flash memory microcontroller functions, including code read, code