gurusfp/billmac
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This README would serve as a scratchpad for ideas. In the bigger product, the following features would be available 8051 based device ################# Design is based on AT89S52 and 89V512RD (Microchip). Differences include * 256bytes Vs 1Kbytes RAM * ISP Flash programming * IAP support Connectivity ############ 1. Keyboard : PS/2 2. Barcode scanner : PS/2 or COM 3. SD Card : SD : SPI * 2 (need FAT16 capability) 4. Display : SPI 5. Printer : TTL (via UART) 6. Computer : RS232(UART) 7. EEPROM : 24C512 * 4 8. Weighing machine : RS232(UART) FIXME ##### 1. Add restore factory settings option
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