For the questions below write the code using the masks that

For the questions below, write the code using the masks that are pre-defined in the header file BITO:0000 0001, BITI:0000 0010, .., BIT7:1000 0000). Perform the operations below on the 8-bit variable (uint 8t data ).

Solution

I will use matlab

a) I will use and operator

(xxxx xxxx and 0010 0000)      if x=0 then (0 and 1)=0, if x=1 then (1 and 1)=1

0010 0000=32 decimal

if the result is 0010 0000=32 just compare to 32 then bit 5 is 1

if the result is 0 just compare to 32 then bit 5 is 0 (this is for part b)

Matlab code

a=input(\'Input the binary number =\',\'s\') %a binary number example 00101000 save as string

a1=bin2dec(a); % transform the binari to decimal

b1=bin2dec(\'00100000\'); %bit5 to decimal, bit5 =1 to do the and after

result=(bitand(a1,b1)); %do the and operation and transform it to decimal

if (result==32)
    display(\'bit5 is 1\');
else

display(\'bit5 is not 1\');

end   

B) just the same just invert the condition of the if and the display message

Matlab code

a=input(\'Input the binary number =\',\'s\') %a binary number example 00101000 save as string

a1=bin2dec(a); % transform the binari to decimal

b1=bin2dec(\'00100000\'); %bit5 to decimal, bit5 =1 to do the and after

result=(bitand(a1,b1)); %do the and operation and transform it to decimal

if (result~=32)
    display(\'bit5 is 0\');

else

display(\'bit5 is not 0\');

end   

c) I will use the and operator as well

(xxxx xxxx and 1000 0000) For bit 7 if the result is 1000 0000 then bit 7 is 1

(xxxx xxxx and 0100 0000) For bit 6 if the result is 0100 0000 then bit 6 is 1

if both are 1 the show the message else show the not messsage

1000 0000=128 and 0100 0000=64

Matlab Code

a=input(\'Input the binary number =\',\'s\'); %a binary number example 00101000 save as string

a1=bin2dec(a); % transform the binari to decimal

b1=bin2dec(\'10000000\'); %bit5 to decimal, bit5 =1 to do the and after
b2=bin2dec(\'01000000\'); %bit5 to decimal, bit5 =1 to do the and after

result1=(bitand(a1,b1)); %do the and operation and transform it to decimal
result2=(bitand(a1,b2)); %do the and operation and transform it to decimal

if ((result1==128)&&(result2==64))
    display(\'bit6,7 are 1,1\');
else
     display(\'bit6,7 are not 1,1\');
end

D) here i will use the and operator again just i will change the condition of the if for bit 7 to detec the zero, and change the dispaly message

Matlab code

a=input(\'Input the binary number =\',\'s\'); %a binary number example 00101000 save as string

a1=bin2dec(a); % transform the binari to decimal

b1=bin2dec(\'10000000\'); %bit5 to decimal, bit5 =1 to do the and after
b2=bin2dec(\'01000000\'); %bit5 to decimal, bit5 =1 to do the and after

result1=(bitand(a1,b1)); %do the and operation and transform it to decimal
result2=(bitand(a1,b2)); %do the and operation and transform it to decimal

if ((result1~=128)&&(result2==64))
    display(\'bit7,6 are 0,1\');
else
     display(\'bit7,6 are not 0,1\');
end

E) just change the if conditions of the if for the two of them and he display messages

Matlab Code

a=input(\'Input the binary number =\',\'s\'); %a binary number example 00101000 save as string

a1=bin2dec(a); % transform the binari to decimal

b1=bin2dec(\'10000000\'); %bit5 to decimal, bit5 =1 to do the and after
b2=bin2dec(\'01000000\'); %bit5 to decimal, bit5 =1 to do the and after

result1=(bitand(a1,b1)); %do the and operation and transform it to decimal
result2=(bitand(a1,b2)); %do the and operation and transform it to decimal

if ((result1~=128)&&(result2~=64))
    display(\'bit7,6 are 0,0\');
else
     display(\'bit7,6 are not 0,0\');
end