1. Answer
the following questions. 5×2=10
a)
Define computer. List any two characteristics of computer.
A computer is an electronic
machine that accepts the data and instructions from the user, process the data
and instructions from the given set of instructions, stores and gives the
information.
Any two characteristics of computer
High speed
Accuracy
b)
Why do computer need primary memory ?
computer
need primary memory to store data that the CPU
needs imminently so that it does not have to wait for it to be delivered
c)
What is system software ? Write its types.
System software is a set of
programs that manages and supports the computer resources and operations of a
computer system.
Its
Types are: Operating System, Language Processor, Utility Software
d)
List any four positive impacts of computer in our society.
Any
four positive impacts of computer in our society are:
1. It creates new and interesting fields of employments.
2. It helps to do work in very less time.
3. It provides faster communication.
4.
It provides greater access to resources.
e)
Computers are used on entertainment, Justify your answer.
Yes,
computers are used on entertainment. Computers use multimedia technology to
entertain the user. It provides variety of multimedia products to the several
developers. It too facilitates graphics, sound and animation to make audio and
video effective.
2. a)
Convert as instructed : 2
i)
(450)8 into Binary ii)
(10111)2 into Hexadecimal
b)
Perform binary calculations: 2
i)
(111 + 11) × 101 ii) 10101 divided by
11
3. Match
the following. 2
Group
‘A’ Group ‘B’
a. Data c)
Error due to the wrong input
b. Information -)Storage
device
c. GIGO d)
Error in the program
d. Bug a)
Raw facts or symbol
b) Processed data
4. Choose
the correct answers: 2
a)
Vaccum tube was developed by ...............
i)
Lee de Forest ii) Jack Killby
iii) Pascal iv)
Dr. Marcian
b)
Source program is written in ...............language.
i)
English ii) Machine
iii) High level iv) Symbolic
c)
Cyber law was introduced in Nepal in .............BS.
i)
206 ii) 2061 iii)
2057 iv) 2059
d)
Which of the following is volatile memory ?
i)
Hard disk ii) Floppy disk
iii) RAM iv) ROM
5. Give
the appropriate technical of the following: 2
a)
A block of CPU that is used to do logical operations. ALU
b)
The basic program stored in ROM chip. Firmware
c)
An input device which converts text or images into digital form. Scanner
d)
The physical components of computer system. Hardware
6. Write
full form of : 2
i)
IT – Information Technology
ii)
VLSI – Very large Scale Integrated Circuit
iii)
GIS - Geographic Information
System
iv) OCR
– Optical Character Reader
Group B :
DOS + Windows [5 marks]
7. Answer
the following questions. 5
a)
List any two icons available on desktop.
Any
two icons available on desktop are:
1. My Computer
2. My Documents
b)
Write down the steps to create a new folder.
The
steps to create new folder are:
Ø Right click on the empty area. A shortcut menu will
appear.
Ø Select New and then Folder. A new folder icon will appear
with the text New Folder highlighted, which indicates that it can be changed.
Ø Type a new name for the folder and press Enter key.
c)
Write the difference between copying and moving.
The main difference between
copying and moving is that the copying makes a duplicate of a file or directory in another location
without affecting the original content while moving transfers the original file
or directory to another location.
Group C :
Programming [23 marks]
8. Answer
the following questions. 3
a)
What is Library function ?
Library
function is pre-defined program which is provided by
QBASIC to perform some task easily.
b)
What is looping ?
Looping
is the process of repeating the execution of a statement or a block of
statements guided by a condition.
c)
Write the function of the following statement.
a)
LEN : It returns the number of
characters in a string.
b)
SGN: It returns the sign of a number.
9. Re-write
the following program with correcting the bus: 2
CLS
REM
to generate series 1, 9, 25............upt to 10th term.
a=
1
x
= 1
DO
WHILE x > - 10
PRINT
a2;
a
= a+ 1
x
= x + 1
WEND
END
Debugged
Program
CLS
REM to generate series 1, 9, 25............upt to 10th
term.
a = 1
x = 1
DO WHILE x <=
10
PRINT a ^ 2;
a = a + 2
x = x + 1
LOOP
END
10. Write
the output of the following program : 2
CLS
n$
= “SARBAJANIK”
FOR
i = LEN (N$) TO 1 STEP - 1
b$=RIGHT$(N$,
I)
PRINT
b$
NEXT
i
END
Output
SARBAJANIK
ARBAJANIK
RBAJANIK
BAJANIK
AJANIK
JANIK
ANIK
NIK
IK
K
11. Re-write
the following program using WHILE..........WEND loop: 2
CLS
FOR
x = 1 TO 10 STEP 2
PRINT
x
s
= s + x
NEXT
x
PRINT
“Sum =”;S
END
CLS
X=1
WHILE
X<= 10
PRINT
X
S
= S + X
X=X+2
WEND
PRINT
“Sum =”;S
END
12. Study
the following program and answer the questions: 2
CLS
INPUT
“Enter any string=”;n$
FOR
x = 1 TO LEN (n$)
v$=LCASE$(n$)
m$=MID$(v$,
X 1)
IF
m$=”a” OR m$ = “e” OR m$ = “i” OR m$ = “o” OR m$=”u”
THEN
v
= v + 1
ELSE
c
= c + 1
END
IF
NEXT
x
PRINT
“Total no of Vowel letters=”;V
PRINT
“Total no of consonant letters=”;c
END
a) List the library function used in the above program ?
Ans: LEN( ), LCASE$( ), MID$( )
b) What will be the value of V if we input n$ =
“submission”?
Ans: 4
13. Write
a program: 4×3=12
a)
To calculate area of four walls of room.
REM
PROGRAM TO DISPLAY AREA OF 4 WALLS
CLS
INPUT
“ENTER LENGTH”; L
INPUT
“ENTER BREADTH”; B
INPUT
“ENTER HEIGHT”; H
A = 2 * H
* (L + B)
PRINT
“AREA OF FOUR WALLS“; A
END
b)
To input any number test whether input number is perfect square or not.
CLS
INPUT
"ENTER ANY NUMBER"; N
S =
SQR(N)
IF
S = INT(S) THEN
PRINT
"PERFECT SQUARE"
ELSE
PRINT
"NOT PERFECT SQUARE"
END
IF
END
c) To input any number and display the multiplication table
of that number.
CLS
INPUT
"ENTER ANY NUMBER"; N
FOR
I = 1 TO 10
PRINT
N; "X"; I; "="; N * I
NEXT
I
END
d)
To print the letters ne in uppercase and next in lowercase.
[Hints
= MiCrOtEk]
CLS
INPUT
"ENTER ANY WORD"; S$
FOR
I = 1 TO LEN(S$)
B$
= MID$(S$, I, 1)
IF
I MOD 2 = 1 THEN
W$
= W$ + UCASE$(B$)
ELSE
W$
= W$ + LCASE$(B$)
END
IF
NEXT
I
PRINT
W$
END SUB
End
