9th Class Computer Studies Guess Paper 2012
Answer the following questions
Q.1. Define Computer?
Q.2. Define Hardware and Software?
Q.3. Define Analog, Digital and Hybrid?
Q.4. Draw block diagram of computer setup and highlight C.P.U?
Q.5. Define ROM with all its types.
Q.6. Define number system.
Q.7. Define Constant, variable and complement?
Q.8. Convert the following in the required base.
i. (111111111)2 – (?)10
ii. (11111110111)2 = (?)16
iii. (1024)10 = (?)2
iv. (ABCD)16 = (?)2
v. (543)8 = (?)10
vi. (1001001)2 = (?)8
vii. (786)8 = (?)2
viii. (8111)10 = (?)8
ix. (ABCD)16 = (?)10
x. (11101111)2 = (?)10
Q.9. Solve the following
i. 1110111 + 11101
ii. 11111 – 111
iii. 111 x 11
iv. 1111 – 10
Q.10. Convert into 2′s complement
i. (11111111)
ii. -786
iii. -81
iv. 74
v. 80
Q.11. Solve the following with truth table
i. (A+B) (A+C) = A+BC
ii. A+AB = A+B
Q.12. Draw K-Map
i. A+B+AB
ii. A+B+C+ABC+ABC
iii. A+B+D+ABD+AB
Q.13. Distinguish between the following
i. Source Programme / Object Programme
ii. Soft copy / Hard copy
iii. ROM / RAM
iv. SIMM / DIMM
Q.14. Write short notes on the following
i. Hybrid Computer
ii. Mini, Micro and Main frame
iii. Variable / Constant
iv. 1st Generation and 2nd Generation
v. Computer / Calculator