File list (Check if you may need any files):
Interfacing Apps\CHAP01
................\......\BIN1
................\......\....\Backup Of BIN1.DBK
................\......\....\BIN1.ASM
................\......\....\bin1.COD
................\......\....\BIN1.doc
................\......\....\BIN1.DSN
................\......\....\bin1.err
................\......\....\bin1.HEX
................\......\....\bin1.lst
................\......\....\bin1.PWI
................\......\....\bin1.SDI
................\......\....\Last Loaded BIN1.DBK
................\......\BIN4
................\......\....\Backup Of bin4.DBK
................\......\....\BIN4.ASM
................\......\....\BIN4.COD
................\......\....\BIN4.doc
................\......\....\BIN4.DSN
................\......\....\BIN4.ERR
................\......\....\BIN4.HEX
................\......\....\BIN4.LST
................\......\....\BIN4.LYT
................\......\....\bin4.PWI
................\......\....\bin4.SDI
................\......\....\BIN4LIST.doc
................\......\....\Last Loaded BIN4.DBK
................\CHAP02
................\......\BIN4D
................\......\.....\bin4d.asm
................\......\.....\BIN4D.COD
................\......\.....\BIN4D.DSN
................\......\.....\BIN4D.ERR
................\......\.....\BIN4D.HEX
................\......\.....\BIN4D.LST
................\......\.....\BIN4D.PWI
................\......\.....\bin4d.SDI
................\......\.....\bout.ini
................\......\.....\Last Loaded BIN4D.DBK
................\......\.....\P16F877A.INC
................\CHAP03
................\......\BIN4F
................\......\.....\BIN4F.ASM
................\......\.....\BIN4F.COD
................\......\.....\BIN4F.DSN
................\......\.....\BIN4F.ERR
................\......\.....\BIN4F.HEX
................\......\.....\BIN4F.LST
................\......\.....\BIN4F.PWI
................\......\.....\BIN4F.SDI
................\......\.....\Last Loaded BIN4F.DBK
................\CHAP04
................\......\KEYPAD
................\......\......\Backup Of KEYPAD.DBK
................\......\......\KEYPAD.ASM
................\......\......\keypad.COD
................\......\......\KEYPAD.doc
................\......\......\KEYPAD.DSN
................\......\......\keypad.err
................\......\......\KEYPAD.HEX
................\......\......\keypad.lst
................\......\......\keypad.PWI
................\......\......\keypad.SDI
................\......\......\Last Loaded KEYPAD.DBK
................\......\LCD
................\......\...\Last Loaded CALC.DBK
................\......\...\Last Loaded LCD.DBK
................\......\...\LCD.ASM
................\......\...\LCD.COD
................\......\...\LCD.doc
................\......\...\LCD.DSN
................\......\...\LCD.ERR
................\......\...\LCD.HEX
................\......\...\LCD.LST
................\......\...\LCD.PWI
................\......\...\LCD.SDI
................\......\...\P16F877A.INC
................\......\...\Program 43 LCD Demo program.doc
................\......\LED1H
................\......\.....\Last Loaded LED1H.DBK
................\......\.....\led1h.asm
................\......\.....\led1h.COD
................\......\.....\LED1H.DSN
................\......\.....\led1h.ERR
................\......\.....\led1h.HEX
................\......\.....\led1h.LST
................\......\.....\led1h.PWI
................\......\.....\led1h.SDI
................\......\LED1S
................\......\.....\Last Loaded LED1S.DBK
................\......\.....\led1s.asm
................\......\.....\led1s.COD
................\......\.....\LED1S.DSN
................\......\.....\led1s.ERR
................\......\.....\led1s.HEX
................\......\.....\led1s.LST
................\......\.....\led1s.PWI
................\......\.....\led1s.SDI
................\CHAP05
................\CHAP06