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is a compact 20-pin microcontroller based on the MCS-51 (8051) architecture, featuring 2KB of Flash memory and an on-chip analog comparator. It is widely used for low-cost embedded control and DIY electronics. Microchip Technology Key Technical Specifications Description CPU Architecture 8-bit CMOS, 8051 compatible Flash Memory 2KB reprogrammable memory (up to 1,000–10,000 cycles) 128 bytes internal RAM 15 programmable lines Timers/Counters Two 16-bit timers (Timer 0, Timer 1) Communication Built-in full duplex UART Special Peripherals On-chip precision analog comparator (on P1.0/P1.1) Operating Voltage 2.7V to 6V Common Project Categories Timekeeping & Display

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while (1) // Read temperature value from sensor int temp = read_temperature(); at89c2051 projects