Singlechip useful source development! (89C2051), including an infrared remote control, real-time clock, VB5.0 with AT89C2051 communications, single-chip RS485 multi-machine communication between, AT24C02/04/08/16 serial memory interface, such as subroutines and 89C2051.

at24c02.exe
ds1302.exe
m50462.exe
rs232.exe
rs485.exe
vb5.exe
x25045.exe
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