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Question 1                                                                                                                                                                              (05 Marks)

Write Code of following in c.

1-      Connect interval timer to speaker and turned it on

2-      Turn off speaker by clearing least significant bits.


Question 2:                                                                                                                                            (10 Marks)


Write down a TSR program that disables the input of characters ‘b’ and ‘c’ from keyboard.

Scan codes of  'b' and 'c' are given below:

 ‘b’ = 0x30

‘c’ = 0x2E.



NOTE: Do not worry about the output and just concentrate on logic. There should be no error in your program. Do not put any query on MDB about this assignment, if you have any query then email at





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Replies to This Discussion

kuch smjh nhi arha koi progrm nhi bn rha ???

1st question wala

mery program ma 2 errors but wa khtm nai ho rhy? kia bny ga is asssignment ka?

can you shear with me ?

koi upload kr day plzzzz

mery program ma ab koi error nai aa rha
bt warning ka msj aa rha getch ma kon sa
prototype use ho ga?plz guide me.


please apni solution file send r dain

ye error nhi ha
just warning ha


send your solution file please


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