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DESCRIPTION of 8051 Development Board:?? If you are learning microcontroller programming and want to make project based on 8051 microcontroller than this board will help you. With this board you can develop and prototype with any of 8051(AT89S51, AT89S52, P89V51RD2, AT89Cxx) 40 pin microcontrollers. The board have and status LED. The 1.5 Amp bridge rectifiers allow this board to be powered with both AC and DC power supply adapters. Board having RS232 Serial port for flashing P89V51RD2 (NXP) microcontroller and also use for interfacing GSM module, GPS module , RFID module. There is 5V, 12V, GND power bus which allow to power external peripherals module.?? FEATURES of 8051 Board:?? DIP 40 Pin??Microcontroller IC Socket For Easy??Insert??and??Removal??of Microcontroller IC. On-board MAX232 Interface Circuit for Easy Communication with a computer & other RS232 serial devices (GPS modules, GSM Modems, etc) High quality FR-4(1.6 mm) PCB On-Board bridge rectifier so that board can accept both AC and DC??Input??voltages Power supply Recommended Input Voltage : 9-12V Min-Max Input Voltage : 9-18V On-Board 5 mm??Power??Plug-in DC Jack On-Board 5V regulator (LM7805) circuit. On-Board Power ON - OFF switch. On-Board??power indication??RED LED. On-Board??GREEN??USER LED connected to P2.0 through jumper JP3. On-Board Input User Switch P3.3 through jumper JP2. On-Board Input External Interrupt Switch (INT1) at P3.3 through jumper JP2. On-board Quartz Crystal??11.05892 MHz Port Extensions for all PORT with Detailed Pin Labeling for Easy Identification of Pin External Pull-Up resistors for Port 0 On-board ISP connector for loading HEX file into Microcontroller like AT89S51/52 etc. Vcc bus (5V and 12V) & GND bus provided to Give POWER Supply to the External Peripheral. Four 3mm mounting hole for easy mounting On-board Reset button. Dimensions:??12cm x 6.4cm Download 8051 kit document: Download Datasheet User Manual - 8051 Development Board = http://www.mediafire.com/file/9do4b9m2sic5y8d/Datasheet_8051_Development_Board_www.MyTechnoCare.com.pdf/file Download Circuit Diagram ??? 8051 Microcontroller Board = http://www.mediafire.com/file/9o4524lmofhrbb3/8051_Development_Kit_MY010V2.1_Schematic_www.MyTechnoCare.com.pdf/file Package Contents: 1 X 8051 Development Board Without AT89S52 Microcontroller IC 1 X MAX232 On-Board RS232 driver IC NOTE: POWER SUPPLY??Adapter??IS NOT??Included??WITH THIS ITEM. NOTE: AT89S52 Microcotroller IC is??NOT Included??With This Item