D) Answer the following questions in short ( 15-20 words) :-(7x2=14):- ( word limit 15-20) 1) Write down the binary addition & subtraction rules. 2) Briefly explain the Octal number system. 3) What is LIST view? 4) Write down 4 advantages of optical mouse. 5) Write down the difference between shut down and sleep mode in computer. 6) What is compound formula in excel. 7) What is Range ?
Answers
Answer:
Evaluate:
(i) (162)8 + (537) 8
Solution:
1 1 <---- carry
1 6 2
5 3 7
7 2 1
Therefore, sum = 7218
(ii) (136) 8 + (636) 8
Solution:
1 <---- carry
1 3 6
6 3 6
7 7 4
Therefore, sum = 7748
(iii) (25.27) 8 + (13.2) 8
Solution:
1 <---- carry
2 5 . 2 7
1 3 . 2
4 0 . 4 7
Therefore, sum = (40.47) 8
(iv) (67.5) 8 + (45.6) 8
Solution:
1 1 <---- carry
6 7 . 5
4 5 . 6
1 3 5 . 3
Therefore, sum = (135.3) 8
Subtraction of octal numbers:
Similarly, subtraction of octal numbers can be performed by following the rules of subtraction of decimal numbers.
Thus, for performing addition and subtraction of octal numbers we can follow the rules of addition and subtraction of decimal numbers
Explanation: