Description: Answer for the eight-way, and based on the principle of computer design, use of 8255 parallel interface
File list (Check if you may need any files):
抢答器_田鑫
...........\Backup of BACKUP~1.SCH
...........\PREVIO~1.DDB
...........\抢答器_田鑫.doc
...........\程序清单.txt