微型计算机使用的键盘上a/t键称为退格键

1、

1C 2C 3D 4D 5B 6D 7B 8A 9C 10B 11D 12D 13C 14A 15B 16D  17A 18D 19C  20A 21B 22D 23C 24B 25A  26C 27C 28C 29A 30A

1B 2D 3B 4D 5C 6C 7D 8D 9C 10C

1C 2C 3A 4C  5A 6B 7D 8D 9D 10A 

1D 2A 3B 4C 5C 6D7B 8D 9B 10B

1C 2A 3C 4C  5B 6C 7D 8C 9C  10A 

123

序列

34571015162021

1,2,3,4,5,6,7,9，10,11,12,13,15,16,18,19,21,22,23,24,26,27,28

1,2,3,4,6,9,11,12,13,16,18,19,22,23,26,27,28

2,4,5,6,7,8,9,10

2,4,7,8

1,2,4,6,7,8,9

1,2,4,7,8,9

1,3,4,5,6,7,8,9，10

1,4,5,6,8

1,3,4,5,6,7,8,9

1,3,4,6,7,8,9

1 C

2 C

3 D

4 D

5 B

6 D

7 B

8 A

9 C

10 B

11 D

12 D

13 C

14 A

15 B

16 D

17 A

18 D

19 C

20 A

21 B 

22 D

23 C 

24 B 

25 A

26 C

27 C

28 C

29 A

30 A

1 B

2 D

3 B

4 D

5 C

6 C

7 D

8 D

9 C

10 C

1 C

2 C

3 A

4 C

5 A

6 B

7 D

8 D

9 D

10 A

1 D

2 A

3 B

4 C

5 C

6 D 

7 B

8 D 

9 B

10 B

1 C

2 A

3 C

4 C

5 B

6 C

7 D

8 C

9 C

10 A