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model no. : P114How to control 4 serials by a 89c51:1st: rs232 port2nd: Ti 12 bit AD/DA 11+ 1 CH--Ti serial standard3rd: I2c RAM 24c04 4th: Serial LCD HOltak standardAD/dA Bd.
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model no. : P123How 89c2051 drive a 4-digit 7 segment LED as clockI2c Clock chip Philip PCF8583pBig capacitor as battery backup9 volts inputI/C SchematicDownload PCF8583p datasheet fm our web siteClock
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8 bits 8051/8751/8951 controllerWith LCD port -- Graphic Lcd 128 * 64 dotRS232 serial port interfaceprovide schematic circuitSingle Board Computer
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CPU:Atmel 892051Serial port outputLED displayPower Jack input8 - 12V DC power supplySingle Board Computer
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Four sets of output relayOutput relay rating : 10A/ 250VAC4 digits remote passwordRing count settable 1-9 ringingsInput voltage 9-12 V DcBest fit for remote on/off Computer, Air Conditioner, Cooker...etc
Remote Controller
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PIC16C58 4MHz CPUUse simple BASIC language8 independent Input/OutputAble to execute 200 command/secpower 9v battery or 5V DcParallax Basic Stamp I compatibleWith Cable / User Manual/software/ batteryUser can write basic in PC then down load to the bd.No need to learn assembly, no need to have device programmerBest fit for Hardware freshman
Command List
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PIC16C57 microcontrollerUse simple BASIC languageTotal 16 independent Input/Output2048-byte Erasable Memory Chip9V batteryPower supplyAble to execute 200 command/secBest fit for Hardware freshman
Command List
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Z80 4Mhz Clock7705 Auto Power O/VEPROM : 2764/27256RAM : 6264/62256I/O : 48 I/O lines (8255 * 2 pcs)Single Board Computer
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Easy to learn, easy to useBest fit for educational purposeFull assembly operating instructionsUse micro-controller PIC 16C54 or 16C84Speaker attached)
Four digits maximum display9V Battery inputBeep-beep sound outputPush one switch counting up, another to count downButton press click or line out control
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Direct insert to AT BUS slotGood for prototype sample hand onWith bracketAll holes gold plated through
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6502 PCBMulti-purpose PCB