File list (Check if you may need any files):
89xPrograms\24cxxa.h
...........\24xx512.h
...........\7seg.asm
...........\a11.c
...........\a24.c
...........\a43.asm
...........\AT89c51
...........\AT89c51.lnp
...........\AT89c51.M51
...........\AT89c51.Opt
...........\AT89c51.plg
...........\AT89c51.Uv2
...........\AT89c52.m51
...........\AT89c52.Opt
...........\AT89c52.plg
...........\AT89c52.Uv2
...........\AT89c52_Opt.Bak
...........\AT89c52_Uv2.Bak
...........\b-tech.ASM
...........\b-tech.LST
...........\b-tech.OBJ
...........\buzz.c
...........\buzz.LST
...........\cw11.asm
...........\CW12.ASM
...........\CW13.ASM
...........\CW14.ASM
...........\DATA.C
...........\delay.c
...........\delay.h
...........\eeprom\24xx512.h
...........\......\i2c.h
...........\......\lcd.h
...........\......\test_eeprom.c
...........\exint.c
...........\Glcdtest.c
...........\Headers\lcd.h
...........\.......\serial.h
...........\.EX\AT89c51
...........\...\AT89c51.hex
...........\...\AT89c51.lnp
...........\...\AT89c51.plg
...........\...\AT89c52
...........\...\AT89c52.lnp
...........\...\AT89c52.plg
...........\...\b-tech.obj
...........\...\buzz.obj
...........\...\i2c_header.obj
...........\...\i2c_test.obj
...........\...\key.obj
...........\...\keyboard.obj
...........\...\lcdtest.obj
...........\...\rtc-header.obj
...........\...\rtc-test.obj
...........\...\serpsw.obj
...........\...\ser_psw.obj
...........\...\sevmux_time.obj
...........\...\sevseg.obj
...........\...\sev_ass.obj
...........\...\sev_mux.obj
...........\...\STARTUP.obj
...........\i2c.h
...........\i2c_header.c
...........\i2c_header.LST
...........\i2c_test.c
...........\i2c_test.LST
...........\key.c
...........\key.LST
...........\keyboard.c
...........\keyboard.LST
...........\keypad.c
...........\lcd.asm
...........\lcd.c
...........\lcd.h
...........\lcd.txt
...........\LCD.xls
...........\lcd4.c
...........\lcd4.h
...........\lcd4b.h
...........\LCDDEMO.asm
...........\lcdt.c
...........\lcdtest.c
...........\lcdtest.LST
...........\led.asm
...........\mux_bcd.c
...........\robot.c
...........\rtc-header.c
...........\rtc-header.LST
...........\rtc-test.c
...........\rtc-test.LST
...........\rtc.h
...........\serial.c
...........\serial.h
...........\serpsw.c
...........\serpsw.LST
...........\serrx.c
...........\ser_psw.c
...........\ser_psw.LST
...........\sev-bcd.c
...........\sevmux.c