2.1 LIST OF COMPONENTS LIST Semiconductors: IC1 7805 regulator IC IC2 AT89C52 microcontroller IC3 DS1621 temperature sensor D1-D4 IN4007 rectifier diodes LED1 Green LED Resistor (all ¼-watt,+-5% carbon, unless stated otherwise): R1 1-kilo-ohm R2 47-kilo-ohm R3 10-kilo-ohm R4, R5 4.7-kilo-ohm VR1 1-kilo-ohm preset Capacitors: C1 25V electrolytic capacitor C2, C3, C4 0.1uF, ceramic disk C5 10uF, 16V electrolytic capacitor C6, C7 33uF, ceramic capacitor Miscellaneous: Transformer 230V AC primary to 0-9V, 250mA secondary 12MHz Crystal 16*1 LCD module LCD
2.1 LIST OF COMPONENTS LIST Semiconductors: IC1 IC2 IC3 D1-D4 LED1 7805 regulator IC AT89C52 microcontroller DS1621 temperature sensor IN4007 rectifier diodes Green LED Resistor (all ¼-watt,+-5% carbon, unless stated otherwise): R1 R2 R3 R4, R5 VR1 1-kilo-ohm 47-kilo-ohm 10-kilo-ohm 4.7-kilo-ohm 1-kilo-ohm preset Capacitors: C1 C2, C3, C4 C5 C6, C7 25V electrolytic capacitor 0.1uF, ceramic disk 10uF, 16V electrolytic capacitor 33uF, ceramic capacitor Miscellaneous: Transformer Crystal LCD 230V AC primary to 0-9V, 250mA secondary 12MHz 16*1 LCD module
Temperature-as.docx